Home / 127,140.78-175,478.45-84,121.14

Finding the Fourth Proportional to 127,140.78, 175,478.45 and 84,121.14

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Solution

The fourth proportional to 127,140.78, 175,478.45 and 84,121.14 is: 116,103.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,140.78 : 175,478.45 = 84,121.14 : x
  2. Step 2: Convert to fraction form
    127,140.78/175,478.45 = 84,121.14/x
  3. Step 3: Cross multiply
    127,140.78x = 175,478.45 × 84,121.14
  4. Step 4: Simplify right side
    127,140.78x = 14,761,446,838.83
  5. Step 5: Solve for x
    x = 14,761,446,838.83/127,140.78
  6. Step 6: Final answer
    x = 116,103.16

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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.