Home / 131,521.80-197,234.10-42,778.20

Finding the Fourth Proportional to 131,521.80, 197,234.10 and 42,778.20

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Solution

The fourth proportional to 131,521.80, 197,234.10 and 42,778.20 is: 64,151.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,521.80 : 197,234.10 = 42,778.20 : x
  2. Step 2: Convert to fraction form
    131,521.80/197,234.10 = 42,778.20/x
  3. Step 3: Cross multiply
    131,521.80x = 197,234.10 × 42,778.20
  4. Step 4: Simplify right side
    131,521.80x = 8,437,319,776.62
  5. Step 5: Solve for x
    x = 8,437,319,776.62/131,521.80
  6. Step 6: Final answer
    x = 64,151.49

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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.