Home / 128,007,032-176,650,169.44-69,269,691.20

Finding the Fourth Proportional to 128,007,032, 176,650,169.44 and 69,269,691.20

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Solution

The fourth proportional to 128,007,032, 176,650,169.44 and 69,269,691.20 is: 95,592,425.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,007,032 : 176,650,169.44 = 69,269,691.20 : x
  2. Step 2: Convert to fraction form
    128,007,032/176,650,169.44 = 69,269,691.20/x
  3. Step 3: Cross multiply
    128,007,032x = 176,650,169.44 × 69,269,691.20
  4. Step 4: Simplify right side
    128,007,032x = 12,236,502,687,536,478
  5. Step 5: Solve for x
    x = 12,236,502,687,536,478/128,007,032
  6. Step 6: Final answer
    x = 95,592,425.64

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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.