Home / 158,976.12-219,386.96-87,360.76

Finding the Fourth Proportional to 158,976.12, 219,386.96 and 87,360.76

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Solution

The fourth proportional to 158,976.12, 219,386.96 and 87,360.76 is: 120,557.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,976.12 : 219,386.96 = 87,360.76 : x
  2. Step 2: Convert to fraction form
    158,976.12/219,386.96 = 87,360.76/x
  3. Step 3: Cross multiply
    158,976.12x = 219,386.96 × 87,360.76
  4. Step 4: Simplify right side
    158,976.12x = 19,165,811,559.69
  5. Step 5: Solve for x
    x = 19,165,811,559.69/158,976.12
  6. Step 6: Final answer
    x = 120,557.80

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1.5x scale

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.