Home / 127,389.78-191,085.12-38,644.04

Finding the Fourth Proportional to 127,389.78, 191,085.12 and 38,644.04

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Solution

The fourth proportional to 127,389.78, 191,085.12 and 38,644.04 is: 57,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,389.78 : 191,085.12 = 38,644.04 : x
  2. Step 2: Convert to fraction form
    127,389.78/191,085.12 = 38,644.04/x
  3. Step 3: Cross multiply
    127,389.78x = 191,085.12 × 38,644.04
  4. Step 4: Simplify right side
    127,389.78x = 7,384,301,498.40
  5. Step 5: Solve for x
    x = 7,384,301,498.40/127,389.78
  6. Step 6: Final answer
    x = 57,966.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.