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Finding the Fourth Proportional to 98,798.80, 147,766.20 and 88,344.40

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Solution

The fourth proportional to 98,798.80, 147,766.20 and 88,344.40 is: 132,130.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,798.80 : 147,766.20 = 88,344.40 : x
  2. Step 2: Convert to fraction form
    98,798.80/147,766.20 = 88,344.40/x
  3. Step 3: Cross multiply
    98,798.80x = 147,766.20 × 88,344.40
  4. Step 4: Simplify right side
    98,798.80x = 13,054,316,279.28
  5. Step 5: Solve for x
    x = 13,054,316,279.28/98,798.80
  6. Step 6: Final answer
    x = 132,130.31

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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.