Home / 155,457.83-231,974.28-138,702.68

Finding the Fourth Proportional to 155,457.83, 231,974.28 and 138,702.68

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Solution

The fourth proportional to 155,457.83, 231,974.28 and 138,702.68 is: 206,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,457.83 : 231,974.28 = 138,702.68 : x
  2. Step 2: Convert to fraction form
    155,457.83/231,974.28 = 138,702.68/x
  3. Step 3: Cross multiply
    155,457.83x = 231,974.28 × 138,702.68
  4. Step 4: Simplify right side
    155,457.83x = 32,175,453,167.20
  5. Step 5: Solve for x
    x = 32,175,453,167.20/155,457.83
  6. Step 6: Final answer
    x = 206,972.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.