Home / 128,988,302.76-178,019,882.37-73,251,626.85

Finding the Fourth Proportional to 128,988,302.76, 178,019,882.37 and 73,251,626.85

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Solution

The fourth proportional to 128,988,302.76, 178,019,882.37 and 73,251,626.85 is: 101,096,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,988,302.76 : 178,019,882.37 = 73,251,626.85 : x
  2. Step 2: Convert to fraction form
    128,988,302.76/178,019,882.37 = 73,251,626.85/x
  3. Step 3: Cross multiply
    128,988,302.76x = 178,019,882.37 × 73,251,626.85
  4. Step 4: Simplify right side
    128,988,302.76x = 13,040,245,995,248,132
  5. Step 5: Solve for x
    x = 13,040,245,995,248,132/128,988,302.76
  6. Step 6: Final answer
    x = 101,096,345.30

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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.