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Finding the Fourth Proportional to 127,980.96, 176,614.08 and 71,395.92

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Solution

The fourth proportional to 127,980.96, 176,614.08 and 71,395.92 is: 98,526.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,980.96 : 176,614.08 = 71,395.92 : x
  2. Step 2: Convert to fraction form
    127,980.96/176,614.08 = 71,395.92/x
  3. Step 3: Cross multiply
    127,980.96x = 176,614.08 × 71,395.92
  4. Step 4: Simplify right side
    127,980.96x = 12,609,524,726.55
  5. Step 5: Solve for x
    x = 12,609,524,726.55/127,980.96
  6. Step 6: Final answer
    x = 98,526.57

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1.5x scale

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.