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Finding the Fourth Proportional to 125,334.63, 172,864.04 and 77,614.47

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Solution

The fourth proportional to 125,334.63, 172,864.04 and 77,614.47 is: 107,047.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,334.63 : 172,864.04 = 77,614.47 : x
  2. Step 2: Convert to fraction form
    125,334.63/172,864.04 = 77,614.47/x
  3. Step 3: Cross multiply
    125,334.63x = 172,864.04 × 77,614.47
  4. Step 4: Simplify right side
    125,334.63x = 13,416,750,458.59
  5. Step 5: Solve for x
    x = 13,416,750,458.59/125,334.63
  6. Step 6: Final answer
    x = 107,047.43

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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.