Home / 103,640.30-155,266.05-96,641.90

Finding the Fourth Proportional to 103,640.30, 155,266.05 and 96,641.90

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Solution

The fourth proportional to 103,640.30, 155,266.05 and 96,641.90 is: 144,781.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.30 : 155,266.05 = 96,641.90 : x
  2. Step 2: Convert to fraction form
    103,640.30/155,266.05 = 96,641.90/x
  3. Step 3: Cross multiply
    103,640.30x = 155,266.05 × 96,641.90
  4. Step 4: Simplify right side
    103,640.30x = 15,005,206,077.50
  5. Step 5: Solve for x
    x = 15,005,206,077.50/103,640.30
  6. Step 6: Final answer
    x = 144,781.58

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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.