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Finding the Fourth Proportional to 125,182.89, 172,752.39 and 74,881.89

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Solution

The fourth proportional to 125,182.89, 172,752.39 and 74,881.89 is: 103,337.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,182.89 : 172,752.39 = 74,881.89 : x
  2. Step 2: Convert to fraction form
    125,182.89/172,752.39 = 74,881.89/x
  3. Step 3: Cross multiply
    125,182.89x = 172,752.39 × 74,881.89
  4. Step 4: Simplify right side
    125,182.89x = 12,936,025,465.22
  5. Step 5: Solve for x
    x = 12,936,025,465.22/125,182.89
  6. Step 6: Final answer
    x = 103,337.01

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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.