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Finding the Fourth Proportional to 125,359.73, 187,862.79 and 69,225.11

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Solution

The fourth proportional to 125,359.73, 187,862.79 and 69,225.11 is: 103,740.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,359.73 : 187,862.79 = 69,225.11 : x
  2. Step 2: Convert to fraction form
    125,359.73/187,862.79 = 69,225.11/x
  3. Step 3: Cross multiply
    125,359.73x = 187,862.79 × 69,225.11
  4. Step 4: Simplify right side
    125,359.73x = 13,004,822,302.66
  5. Step 5: Solve for x
    x = 13,004,822,302.66/125,359.73
  6. Step 6: Final answer
    x = 103,740.03

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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.