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Finding the Fourth Proportional to 148,707.61, 205,217.99 and 80,725.12

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Solution

The fourth proportional to 148,707.61, 205,217.99 and 80,725.12 is: 111,401.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,707.61 : 205,217.99 = 80,725.12 : x
  2. Step 2: Convert to fraction form
    148,707.61/205,217.99 = 80,725.12/x
  3. Step 3: Cross multiply
    148,707.61x = 205,217.99 × 80,725.12
  4. Step 4: Simplify right side
    148,707.61x = 16,566,246,254.96
  5. Step 5: Solve for x
    x = 16,566,246,254.96/148,707.61
  6. Step 6: Final answer
    x = 111,401.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.