Home / 128,065,269.90-176,730,035-69,327,891.42

Finding the Fourth Proportional to 128,065,269.90, 176,730,035 and 69,327,891.42

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Solution

The fourth proportional to 128,065,269.90, 176,730,035 and 69,327,891.42 is: 95,672,469.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,065,269.90 : 176,730,035 = 69,327,891.42 : x
  2. Step 2: Convert to fraction form
    128,065,269.90/176,730,035 = 69,327,891.42/x
  3. Step 3: Cross multiply
    128,065,269.90x = 176,730,035 × 69,327,891.42
  4. Step 4: Simplify right side
    128,065,269.90x = 12,252,320,677,132,800
  5. Step 5: Solve for x
    x = 12,252,320,677,132,800/128,065,269.90
  6. Step 6: Final answer
    x = 95,672,469.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.