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Finding the Fourth Proportional to 119,432.73, 179,179.88 and 85,737.81

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Solution

The fourth proportional to 119,432.73, 179,179.88 and 85,737.81 is: 128,628.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,432.73 : 179,179.88 = 85,737.81 : x
  2. Step 2: Convert to fraction form
    119,432.73/179,179.88 = 85,737.81/x
  3. Step 3: Cross multiply
    119,432.73x = 179,179.88 × 85,737.81
  4. Step 4: Simplify right side
    119,432.73x = 15,362,490,507.26
  5. Step 5: Solve for x
    x = 15,362,490,507.26/119,432.73
  6. Step 6: Final answer
    x = 128,628.81

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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.