Home / 145,493,978,259.57-200,779,553,206.82-81,265,639,894.62

Finding the Fourth Proportional to 145,493,978,259.57, 200,779,553,206.82 and 81,265,639,894.62

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Solution

The fourth proportional to 145,493,978,259.57, 200,779,553,206.82 and 81,265,639,894.62 is: 112,145,389,550.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,493,978,259.57 : 200,779,553,206.82 = 81,265,639,894.62 : x
  2. Step 2: Convert to fraction form
    145,493,978,259.57/200,779,553,206.82 = 81,265,639,894.62/x
  3. Step 3: Cross multiply
    145,493,978,259.57x = 200,779,553,206.82 × 81,265,639,894.62
  4. Step 4: Simplify right side
    145,493,978,259.57x = 16,316,478,869,107,728,449,536
  5. Step 5: Solve for x
    x = 16,316,478,869,107,728,449,536/145,493,978,259.57
  6. Step 6: Final answer
    x = 112,145,389,550.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.