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Finding the Fourth Proportional to 114,988.92, 158,757.62 and 78,751.14

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Solution

The fourth proportional to 114,988.92, 158,757.62 and 78,751.14 is: 108,726.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,988.92 : 158,757.62 = 78,751.14 : x
  2. Step 2: Convert to fraction form
    114,988.92/158,757.62 = 78,751.14/x
  3. Step 3: Cross multiply
    114,988.92x = 158,757.62 × 78,751.14
  4. Step 4: Simplify right side
    114,988.92x = 12,502,343,164.93
  5. Step 5: Solve for x
    x = 12,502,343,164.93/114,988.92
  6. Step 6: Final answer
    x = 108,726.50

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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.