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Finding the Fourth Proportional to 154,468.30, 231,724.05 and 65,721.10

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Solution

The fourth proportional to 154,468.30, 231,724.05 and 65,721.10 is: 98,590.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,468.30 : 231,724.05 = 65,721.10 : x
  2. Step 2: Convert to fraction form
    154,468.30/231,724.05 = 65,721.10/x
  3. Step 3: Cross multiply
    154,468.30x = 231,724.05 × 65,721.10
  4. Step 4: Simplify right side
    154,468.30x = 15,229,159,462.46
  5. Step 5: Solve for x
    x = 15,229,159,462.46/154,468.30
  6. Step 6: Final answer
    x = 98,590.84

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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.