Home / 100,658,763,909.12-138,912,430,600.32-54,935,542,967.04

Finding the Fourth Proportional to 100,658,763,909.12, 138,912,430,600.32 and 54,935,542,967.04

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Solution

The fourth proportional to 100,658,763,909.12, 138,912,430,600.32 and 54,935,542,967.04 is: 75,812,870,171.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,658,763,909.12 : 138,912,430,600.32 = 54,935,542,967.04 : x
  2. Step 2: Convert to fraction form
    100,658,763,909.12/138,912,430,600.32 = 54,935,542,967.04/x
  3. Step 3: Cross multiply
    100,658,763,909.12x = 138,912,430,600.32 × 54,935,542,967.04
  4. Step 4: Simplify right side
    100,658,763,909.12x = 7,631,229,799,899,842,215,936
  5. Step 5: Solve for x
    x = 7,631,229,799,899,842,215,936/100,658,763,909.12
  6. Step 6: Final answer
    x = 75,812,870,171.84

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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.