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Finding the Fourth Proportional to 160,418.78, 240,545.11 and 85,518.80

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Solution

The fourth proportional to 160,418.78, 240,545.11 and 85,518.80 is: 128,233.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,418.78 : 240,545.11 = 85,518.80 : x
  2. Step 2: Convert to fraction form
    160,418.78/240,545.11 = 85,518.80/x
  3. Step 3: Cross multiply
    160,418.78x = 240,545.11 × 85,518.80
  4. Step 4: Simplify right side
    160,418.78x = 20,571,129,153.07
  5. Step 5: Solve for x
    x = 20,571,129,153.07/160,418.78
  6. Step 6: Final answer
    x = 128,233.92

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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.