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Finding the Fourth Proportional to 229,689.92, 316,943.88 and 134,127.20

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Solution

The fourth proportional to 229,689.92, 316,943.88 and 134,127.20 is: 185,079.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,689.92 : 316,943.88 = 134,127.20 : x
  2. Step 2: Convert to fraction form
    229,689.92/316,943.88 = 134,127.20/x
  3. Step 3: Cross multiply
    229,689.92x = 316,943.88 × 134,127.20
  4. Step 4: Simplify right side
    229,689.92x = 42,510,795,181.54
  5. Step 5: Solve for x
    x = 42,510,795,181.54/229,689.92
  6. Step 6: Final answer
    x = 185,079.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.