Home / 159,520.80-220,148.38-87,900.74

Finding the Fourth Proportional to 159,520.80, 220,148.38 and 87,900.74

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Solution

The fourth proportional to 159,520.80, 220,148.38 and 87,900.74 is: 121,308.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,520.80 : 220,148.38 = 87,900.74 : x
  2. Step 2: Convert to fraction form
    159,520.80/220,148.38 = 87,900.74/x
  3. Step 3: Cross multiply
    159,520.80x = 220,148.38 × 87,900.74
  4. Step 4: Simplify right side
    159,520.80x = 19,351,205,511.80
  5. Step 5: Solve for x
    x = 19,351,205,511.80/159,520.80
  6. Step 6: Final answer
    x = 121,308.35

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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.