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Finding the Fourth Proportional to 111,503.47, 167,098.02 and 86,426.08

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Solution

The fourth proportional to 111,503.47, 167,098.02 and 86,426.08 is: 129,517.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,503.47 : 167,098.02 = 86,426.08 : x
  2. Step 2: Convert to fraction form
    111,503.47/167,098.02 = 86,426.08/x
  3. Step 3: Cross multiply
    111,503.47x = 167,098.02 × 86,426.08
  4. Step 4: Simplify right side
    111,503.47x = 14,441,626,844.36
  5. Step 5: Solve for x
    x = 14,441,626,844.36/111,503.47
  6. Step 6: Final answer
    x = 129,517.29

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1.5x scale

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.