Home / 128,988,311.46-178,019,894.40-73,251,635.56

Finding the Fourth Proportional to 128,988,311.46, 178,019,894.40 and 73,251,635.56

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Solution

The fourth proportional to 128,988,311.46, 178,019,894.40 and 73,251,635.56 is: 101,096,357.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,988,311.46 : 178,019,894.40 = 73,251,635.56 : x
  2. Step 2: Convert to fraction form
    128,988,311.46/178,019,894.40 = 73,251,635.56/x
  3. Step 3: Cross multiply
    128,988,311.46x = 178,019,894.40 × 73,251,635.56
  4. Step 4: Simplify right side
    128,988,311.46x = 13,040,248,427,018,486
  5. Step 5: Solve for x
    x = 13,040,248,427,018,486/128,988,311.46
  6. Step 6: Final answer
    x = 101,096,357.33

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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.