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Finding the Fourth Proportional to 98,136.40, 147,046.20 and 88,805.20

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Solution

The fourth proportional to 98,136.40, 147,046.20 and 88,805.20 is: 133,064.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,136.40 : 147,046.20 = 88,805.20 : x
  2. Step 2: Convert to fraction form
    98,136.40/147,046.20 = 88,805.20/x
  3. Step 3: Cross multiply
    98,136.40x = 147,046.20 × 88,805.20
  4. Step 4: Simplify right side
    98,136.40x = 13,058,467,200.24
  5. Step 5: Solve for x
    x = 13,058,467,200.24/98,136.40
  6. Step 6: Final answer
    x = 133,064.46

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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.