Home / 145,189.59-200,350.22-81,515.09

Finding the Fourth Proportional to 145,189.59, 200,350.22 and 81,515.09

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Solution

The fourth proportional to 145,189.59, 200,350.22 and 81,515.09 is: 112,484.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,189.59 : 200,350.22 = 81,515.09 : x
  2. Step 2: Convert to fraction form
    145,189.59/200,350.22 = 81,515.09/x
  3. Step 3: Cross multiply
    145,189.59x = 200,350.22 × 81,515.09
  4. Step 4: Simplify right side
    145,189.59x = 16,331,564,805.49
  5. Step 5: Solve for x
    x = 16,331,564,805.49/145,189.59
  6. Step 6: Final answer
    x = 112,484.41

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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.