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Finding the Fourth Proportional to 111,502.47, 167,096.52 and 86,425.08

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Solution

The fourth proportional to 111,502.47, 167,096.52 and 86,425.08 is: 129,515.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,502.47 : 167,096.52 = 86,425.08 : x
  2. Step 2: Convert to fraction form
    111,502.47/167,096.52 = 86,425.08/x
  3. Step 3: Cross multiply
    111,502.47x = 167,096.52 × 86,425.08
  4. Step 4: Simplify right side
    111,502.47x = 14,441,329,482.11
  5. Step 5: Solve for x
    x = 14,441,329,482.11/111,502.47
  6. Step 6: Final answer
    x = 129,515.78

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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.