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Finding the Fourth Proportional to 125,265.30, 187,460.55 and 85,899.30

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Solution

The fourth proportional to 125,265.30, 187,460.55 and 85,899.30 is: 128,549.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,265.30 : 187,460.55 = 85,899.30 : x
  2. Step 2: Convert to fraction form
    125,265.30/187,460.55 = 85,899.30/x
  3. Step 3: Cross multiply
    125,265.30x = 187,460.55 × 85,899.30
  4. Step 4: Simplify right side
    125,265.30x = 16,102,730,022.62
  5. Step 5: Solve for x
    x = 16,102,730,022.62/125,265.30
  6. Step 6: Final answer
    x = 128,549.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.