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Finding the Fourth Proportional to 125,254.50, 172,851.21 and 68,666.28

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Solution

The fourth proportional to 125,254.50, 172,851.21 and 68,666.28 is: 94,759.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,254.50 : 172,851.21 = 68,666.28 : x
  2. Step 2: Convert to fraction form
    125,254.50/172,851.21 = 68,666.28/x
  3. Step 3: Cross multiply
    125,254.50x = 172,851.21 × 68,666.28
  4. Step 4: Simplify right side
    125,254.50x = 11,869,049,584.20
  5. Step 5: Solve for x
    x = 11,869,049,584.20/125,254.50
  6. Step 6: Final answer
    x = 94,759.47

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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.