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Finding the Fourth Proportional to 125,365.59, 187,871.61 and 69,230.97

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Solution

The fourth proportional to 125,365.59, 187,871.61 and 69,230.97 is: 103,748.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,365.59 : 187,871.61 = 69,230.97 : x
  2. Step 2: Convert to fraction form
    125,365.59/187,871.61 = 69,230.97/x
  3. Step 3: Cross multiply
    125,365.59x = 187,871.61 × 69,230.97
  4. Step 4: Simplify right side
    125,365.59x = 13,006,533,795.76
  5. Step 5: Solve for x
    x = 13,006,533,795.76/125,365.59
  6. Step 6: Final answer
    x = 103,748.83

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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.