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Finding the Fourth Proportional to 160,219.95, 240,472.49 and 85,401.87

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Solution

The fourth proportional to 160,219.95, 240,472.49 and 85,401.87 is: 128,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,219.95 : 240,472.49 = 85,401.87 : x
  2. Step 2: Convert to fraction form
    160,219.95/240,472.49 = 85,401.87/x
  3. Step 3: Cross multiply
    160,219.95x = 240,472.49 × 85,401.87
  4. Step 4: Simplify right side
    160,219.95x = 20,536,799,902.55
  5. Step 5: Solve for x
    x = 20,536,799,902.55/160,219.95
  6. Step 6: Final answer
    x = 128,178.79

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1.5x scale

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.