Home / 159,617.32-220,273.40-87,999.90

Finding the Fourth Proportional to 159,617.32, 220,273.40 and 87,999.90

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Solution

The fourth proportional to 159,617.32, 220,273.40 and 87,999.90 is: 121,440.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,617.32 : 220,273.40 = 87,999.90 : x
  2. Step 2: Convert to fraction form
    159,617.32/220,273.40 = 87,999.90/x
  3. Step 3: Cross multiply
    159,617.32x = 220,273.40 × 87,999.90
  4. Step 4: Simplify right side
    159,617.32x = 19,384,037,172.66
  5. Step 5: Solve for x
    x = 19,384,037,172.66/159,617.32
  6. Step 6: Final answer
    x = 121,440.69

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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.