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Finding the Fourth Proportional to 229,697.65, 316,957.39 and 137,812.06

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Solution

The fourth proportional to 229,697.65, 316,957.39 and 137,812.06 is: 190,165.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,697.65 : 316,957.39 = 137,812.06 : x
  2. Step 2: Convert to fraction form
    229,697.65/316,957.39 = 137,812.06/x
  3. Step 3: Cross multiply
    229,697.65x = 316,957.39 × 137,812.06
  4. Step 4: Simplify right side
    229,697.65x = 43,680,551,812.78
  5. Step 5: Solve for x
    x = 43,680,551,812.78/229,697.65
  6. Step 6: Final answer
    x = 190,165.43

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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.