Home / 158,944.32-219,356.64-87,338.70

Finding the Fourth Proportional to 158,944.32, 219,356.64 and 87,338.70

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Solution

The fourth proportional to 158,944.32, 219,356.64 and 87,338.70 is: 120,534.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,944.32 : 219,356.64 = 87,338.70 : x
  2. Step 2: Convert to fraction form
    158,944.32/219,356.64 = 87,338.70/x
  3. Step 3: Cross multiply
    158,944.32x = 219,356.64 × 87,338.70
  4. Step 4: Simplify right side
    158,944.32x = 19,158,323,773.97
  5. Step 5: Solve for x
    x = 19,158,323,773.97/158,944.32
  6. Step 6: Final answer
    x = 120,534.81

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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.