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Finding the Fourth Proportional to 98,124.30, 146,797.65 and 85,121.10

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Solution

The fourth proportional to 98,124.30, 146,797.65 and 85,121.10 is: 127,344.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,124.30 : 146,797.65 = 85,121.10 : x
  2. Step 2: Convert to fraction form
    98,124.30/146,797.65 = 85,121.10/x
  3. Step 3: Cross multiply
    98,124.30x = 146,797.65 × 85,121.10
  4. Step 4: Simplify right side
    98,124.30x = 12,495,577,445.42
  5. Step 5: Solve for x
    x = 12,495,577,445.42/98,124.30
  6. Step 6: Final answer
    x = 127,344.37

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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.