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Finding the Fourth Proportional to 160,400.70, 240,601.05 and 85,491.90

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Solution

The fourth proportional to 160,400.70, 240,601.05 and 85,491.90 is: 128,237.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,400.70 : 240,601.05 = 85,491.90 : x
  2. Step 2: Convert to fraction form
    160,400.70/240,601.05 = 85,491.90/x
  3. Step 3: Cross multiply
    160,400.70x = 240,601.05 × 85,491.90
  4. Step 4: Simplify right side
    160,400.70x = 20,569,440,906.50
  5. Step 5: Solve for x
    x = 20,569,440,906.50/160,400.70
  6. Step 6: Final answer
    x = 128,237.85

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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.