Home / 128,304,046.80-192,456,070.20-79,836,627.60

Finding the Fourth Proportional to 128,304,046.80, 192,456,070.20 and 79,836,627.60

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Solution

The fourth proportional to 128,304,046.80, 192,456,070.20 and 79,836,627.60 is: 119,754,941.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,046.80 : 192,456,070.20 = 79,836,627.60 : x
  2. Step 2: Convert to fraction form
    128,304,046.80/192,456,070.20 = 79,836,627.60/x
  3. Step 3: Cross multiply
    128,304,046.80x = 192,456,070.20 × 79,836,627.60
  4. Step 4: Simplify right side
    128,304,046.80x = 15,365,043,605,916,856
  5. Step 5: Solve for x
    x = 15,365,043,605,916,856/128,304,046.80
  6. Step 6: Final answer
    x = 119,754,941.40

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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.