Home / 102,881.52-142,025.03-77,397.61

Finding the Fourth Proportional to 102,881.52, 142,025.03 and 77,397.61

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Solution

The fourth proportional to 102,881.52, 142,025.03 and 77,397.61 is: 106,845.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,881.52 : 142,025.03 = 77,397.61 : x
  2. Step 2: Convert to fraction form
    102,881.52/142,025.03 = 77,397.61/x
  3. Step 3: Cross multiply
    102,881.52x = 142,025.03 × 77,397.61
  4. Step 4: Simplify right side
    102,881.52x = 10,992,397,720.61
  5. Step 5: Solve for x
    x = 10,992,397,720.61/102,881.52
  6. Step 6: Final answer
    x = 106,845.22

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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.