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Finding the Fourth Proportional to 115,156.59, 158,913.70 and 64,169.11

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Solution

The fourth proportional to 115,156.59, 158,913.70 and 64,169.11 is: 88,552.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,156.59 : 158,913.70 = 64,169.11 : x
  2. Step 2: Convert to fraction form
    115,156.59/158,913.70 = 64,169.11/x
  3. Step 3: Cross multiply
    115,156.59x = 158,913.70 × 64,169.11
  4. Step 4: Simplify right side
    115,156.59x = 10,197,350,695.81
  5. Step 5: Solve for x
    x = 10,197,350,695.81/115,156.59
  6. Step 6: Final answer
    x = 88,552.04

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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.