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Finding the Fourth Proportional to 124,959.64, 187,242.64 and 68,716.20

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Solution

The fourth proportional to 124,959.64, 187,242.64 and 68,716.20 is: 102,966.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,959.64 : 187,242.64 = 68,716.20 : x
  2. Step 2: Convert to fraction form
    124,959.64/187,242.64 = 68,716.20/x
  3. Step 3: Cross multiply
    124,959.64x = 187,242.64 × 68,716.20
  4. Step 4: Simplify right side
    124,959.64x = 12,866,602,698.77
  5. Step 5: Solve for x
    x = 12,866,602,698.77/124,959.64
  6. Step 6: Final answer
    x = 102,966.07

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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.