Home / 125,110.28-172,645.34-74,127.71

Finding the Fourth Proportional to 125,110.28, 172,645.34 and 74,127.71

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Solution

The fourth proportional to 125,110.28, 172,645.34 and 74,127.71 is: 102,292.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,110.28 : 172,645.34 = 74,127.71 : x
  2. Step 2: Convert to fraction form
    125,110.28/172,645.34 = 74,127.71/x
  3. Step 3: Cross multiply
    125,110.28x = 172,645.34 × 74,127.71
  4. Step 4: Simplify right side
    125,110.28x = 12,797,802,462.51
  5. Step 5: Solve for x
    x = 12,797,802,462.51/125,110.28
  6. Step 6: Final answer
    x = 102,292.18

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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.