Home / 159,139.48-219,607.46-87,519.28

Finding the Fourth Proportional to 159,139.48, 219,607.46 and 87,519.28

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Solution

The fourth proportional to 159,139.48, 219,607.46 and 87,519.28 is: 120,773.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,139.48 : 219,607.46 = 87,519.28 : x
  2. Step 2: Convert to fraction form
    159,139.48/219,607.46 = 87,519.28/x
  3. Step 3: Cross multiply
    159,139.48x = 219,607.46 × 87,519.28
  4. Step 4: Simplify right side
    159,139.48x = 19,219,886,781.83
  5. Step 5: Solve for x
    x = 19,219,886,781.83/159,139.48
  6. Step 6: Final answer
    x = 120,773.84

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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.