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Finding the Fourth Proportional to 172,478.52, 258,718.92 and 60,158.32

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Solution

The fourth proportional to 172,478.52, 258,718.92 and 60,158.32 is: 90,237.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,478.52 : 258,718.92 = 60,158.32 : x
  2. Step 2: Convert to fraction form
    172,478.52/258,718.92 = 60,158.32/x
  3. Step 3: Cross multiply
    172,478.52x = 258,718.92 × 60,158.32
  4. Step 4: Simplify right side
    172,478.52x = 15,564,095,579.41
  5. Step 5: Solve for x
    x = 15,564,095,579.41/172,478.52
  6. Step 6: Final answer
    x = 90,237.88

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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.