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Finding the Fourth Proportional to 98,714.80, 147,640.20 and 88,260.40

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Solution

The fourth proportional to 98,714.80, 147,640.20 and 88,260.40 is: 132,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,714.80 : 147,640.20 = 88,260.40 : x
  2. Step 2: Convert to fraction form
    98,714.80/147,640.20 = 88,260.40/x
  3. Step 3: Cross multiply
    98,714.80x = 147,640.20 × 88,260.40
  4. Step 4: Simplify right side
    98,714.80x = 13,030,783,108.08
  5. Step 5: Solve for x
    x = 13,030,783,108.08/98,714.80
  6. Step 6: Final answer
    x = 132,004.35

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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.