Home / 159,420.06-219,997.02-87,806.76

Finding the Fourth Proportional to 159,420.06, 219,997.02 and 87,806.76

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Solution

The fourth proportional to 159,420.06, 219,997.02 and 87,806.76 is: 121,171.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,420.06 : 219,997.02 = 87,806.76 : x
  2. Step 2: Convert to fraction form
    159,420.06/219,997.02 = 87,806.76/x
  3. Step 3: Cross multiply
    159,420.06x = 219,997.02 × 87,806.76
  4. Step 4: Simplify right side
    159,420.06x = 19,317,225,535.86
  5. Step 5: Solve for x
    x = 19,317,225,535.86/159,420.06
  6. Step 6: Final answer
    x = 121,171.86

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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.