Home / 159,015.20-219,445-87,397.04

Finding the Fourth Proportional to 159,015.20, 219,445 and 87,397.04

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Solution

The fourth proportional to 159,015.20, 219,445 and 87,397.04 is: 120,610.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,015.20 : 219,445 = 87,397.04 : x
  2. Step 2: Convert to fraction form
    159,015.20/219,445 = 87,397.04/x
  3. Step 3: Cross multiply
    159,015.20x = 219,445 × 87,397.04
  4. Step 4: Simplify right side
    159,015.20x = 19,178,843,442.80
  5. Step 5: Solve for x
    x = 19,178,843,442.80/159,015.20
  6. Step 6: Final answer
    x = 120,610.13

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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.