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Finding the Fourth Proportional to 160,412.90, 240,521.90 and 80,357.76

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Solution

The fourth proportional to 160,412.90, 240,521.90 and 80,357.76 is: 120,487.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,412.90 : 240,521.90 = 80,357.76 : x
  2. Step 2: Convert to fraction form
    160,412.90/240,521.90 = 80,357.76/x
  3. Step 3: Cross multiply
    160,412.90x = 240,521.90 × 80,357.76
  4. Step 4: Simplify right side
    160,412.90x = 19,327,800,713.16
  5. Step 5: Solve for x
    x = 19,327,800,713.16/160,412.90
  6. Step 6: Final answer
    x = 120,487.82

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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.