Home / 127,982.62-176,572.47-77,671.90

Finding the Fourth Proportional to 127,982.62, 176,572.47 and 77,671.90

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Solution

The fourth proportional to 127,982.62, 176,572.47 and 77,671.90 is: 107,160.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,982.62 : 176,572.47 = 77,671.90 : x
  2. Step 2: Convert to fraction form
    127,982.62/176,572.47 = 77,671.90/x
  3. Step 3: Cross multiply
    127,982.62x = 176,572.47 × 77,671.90
  4. Step 4: Simplify right side
    127,982.62x = 13,714,719,232.59
  5. Step 5: Solve for x
    x = 13,714,719,232.59/127,982.62
  6. Step 6: Final answer
    x = 107,160.79

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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.