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Finding the Fourth Proportional to 132,805.65, 198,880.43 and 98,990.58

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Solution

The fourth proportional to 132,805.65, 198,880.43 and 98,990.58 is: 148,241.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,805.65 : 198,880.43 = 98,990.58 : x
  2. Step 2: Convert to fraction form
    132,805.65/198,880.43 = 98,990.58/x
  3. Step 3: Cross multiply
    132,805.65x = 198,880.43 × 98,990.58
  4. Step 4: Simplify right side
    132,805.65x = 19,687,288,621.40
  5. Step 5: Solve for x
    x = 19,687,288,621.40/132,805.65
  6. Step 6: Final answer
    x = 148,241.35

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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.