Home / 159,520.26-220,147.78-87,900.28

Finding the Fourth Proportional to 159,520.26, 220,147.78 and 87,900.28

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Solution

The fourth proportional to 159,520.26, 220,147.78 and 87,900.28 is: 121,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,520.26 : 220,147.78 = 87,900.28 : x
  2. Step 2: Convert to fraction form
    159,520.26/220,147.78 = 87,900.28/x
  3. Step 3: Cross multiply
    159,520.26x = 220,147.78 × 87,900.28
  4. Step 4: Simplify right side
    159,520.26x = 19,351,051,503.38
  5. Step 5: Solve for x
    x = 19,351,051,503.38/159,520.26
  6. Step 6: Final answer
    x = 121,307.80

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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.