Home / 80,774,439.20-121,161,658.80-71,846,230.40

Finding the Fourth Proportional to 80,774,439.20, 121,161,658.80 and 71,846,230.40

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Solution

The fourth proportional to 80,774,439.20, 121,161,658.80 and 71,846,230.40 is: 107,769,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,774,439.20 : 121,161,658.80 = 71,846,230.40 : x
  2. Step 2: Convert to fraction form
    80,774,439.20/121,161,658.80 = 71,846,230.40/x
  3. Step 3: Cross multiply
    80,774,439.20x = 121,161,658.80 × 71,846,230.40
  4. Step 4: Simplify right side
    80,774,439.20x = 8,705,008,453,790,988
  5. Step 5: Solve for x
    x = 8,705,008,453,790,988/80,774,439.20
  6. Step 6: Final answer
    x = 107,769,345.60

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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.