Home / 128,122,350.39-176,807,963.16-69,383,671.34

Finding the Fourth Proportional to 128,122,350.39, 176,807,963.16 and 69,383,671.34

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Solution

The fourth proportional to 128,122,350.39, 176,807,963.16 and 69,383,671.34 is: 95,748,989.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,122,350.39 : 176,807,963.16 = 69,383,671.34 : x
  2. Step 2: Convert to fraction form
    128,122,350.39/176,807,963.16 = 69,383,671.34/x
  3. Step 3: Cross multiply
    128,122,350.39x = 176,807,963.16 × 69,383,671.34
  4. Step 4: Simplify right side
    128,122,350.39x = 12,267,585,605,304,226
  5. Step 5: Solve for x
    x = 12,267,585,605,304,226/128,122,350.39
  6. Step 6: Final answer
    x = 95,748,989.68

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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.