Home / 128,304,429.60-192,456,644.40-125,753,512.80

Finding the Fourth Proportional to 128,304,429.60, 192,456,644.40 and 125,753,512.80

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Solution

The fourth proportional to 128,304,429.60, 192,456,644.40 and 125,753,512.80 is: 188,630,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,429.60 : 192,456,644.40 = 125,753,512.80 : x
  2. Step 2: Convert to fraction form
    128,304,429.60/192,456,644.40 = 125,753,512.80/x
  3. Step 3: Cross multiply
    128,304,429.60x = 192,456,644.40 × 125,753,512.80
  4. Step 4: Simplify right side
    128,304,429.60x = 24,202,099,095,000,448
  5. Step 5: Solve for x
    x = 24,202,099,095,000,448/128,304,429.60
  6. Step 6: Final answer
    x = 188,630,269.20

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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.