Home / 128,912,663.04-193,320,057.60-42,625,190.40

Finding the Fourth Proportional to 128,912,663.04, 193,320,057.60 and 42,625,190.40

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Solution

The fourth proportional to 128,912,663.04, 193,320,057.60 and 42,625,190.40 is: 63,921,604.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,912,663.04 : 193,320,057.60 = 42,625,190.40 : x
  2. Step 2: Convert to fraction form
    128,912,663.04/193,320,057.60 = 42,625,190.40/x
  3. Step 3: Cross multiply
    128,912,663.04x = 193,320,057.60 × 42,625,190.40
  4. Step 4: Simplify right side
    128,912,663.04x = 8,240,304,263,338,966
  5. Step 5: Solve for x
    x = 8,240,304,263,338,966/128,912,663.04
  6. Step 6: Final answer
    x = 63,921,604.51

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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.