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Finding the Fourth Proportional to 98,103.60, 147,155.40 and 38,908.80

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Solution

The fourth proportional to 98,103.60, 147,155.40 and 38,908.80 is: 58,363.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,103.60 : 147,155.40 = 38,908.80 : x
  2. Step 2: Convert to fraction form
    98,103.60/147,155.40 = 38,908.80/x
  3. Step 3: Cross multiply
    98,103.60x = 147,155.40 × 38,908.80
  4. Step 4: Simplify right side
    98,103.60x = 5,725,640,027.52
  5. Step 5: Solve for x
    x = 5,725,640,027.52/98,103.60
  6. Step 6: Final answer
    x = 58,363.20

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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.