Home / 158,947.32-219,360.78-87,341.70

Finding the Fourth Proportional to 158,947.32, 219,360.78 and 87,341.70

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Solution

The fourth proportional to 158,947.32, 219,360.78 and 87,341.70 is: 120,538.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,947.32 : 219,360.78 = 87,341.70 : x
  2. Step 2: Convert to fraction form
    158,947.32/219,360.78 = 87,341.70/x
  3. Step 3: Cross multiply
    158,947.32x = 219,360.78 × 87,341.70
  4. Step 4: Simplify right side
    158,947.32x = 19,159,343,438.53
  5. Step 5: Solve for x
    x = 19,159,343,438.53/158,947.32
  6. Step 6: Final answer
    x = 120,538.95

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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.