Home / 128,259,901.13-176,993,921.69-69,521,305.10

Finding the Fourth Proportional to 128,259,901.13, 176,993,921.69 and 69,521,305.10

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Solution

The fourth proportional to 128,259,901.13, 176,993,921.69 and 69,521,305.10 is: 95,936,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,259,901.13 : 176,993,921.69 = 69,521,305.10 : x
  2. Step 2: Convert to fraction form
    128,259,901.13/176,993,921.69 = 69,521,305.10/x
  3. Step 3: Cross multiply
    128,259,901.13x = 176,993,921.69 × 69,521,305.10
  4. Step 4: Simplify right side
    128,259,901.13x = 12,304,848,430,308,390
  5. Step 5: Solve for x
    x = 12,304,848,430,308,390/128,259,901.13
  6. Step 6: Final answer
    x = 95,936,830.78

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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.