Home / 159,146.32-219,622-87,531.20

Finding the Fourth Proportional to 159,146.32, 219,622 and 87,531.20

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Solution

The fourth proportional to 159,146.32, 219,622 and 87,531.20 is: 120,793.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,146.32 : 219,622 = 87,531.20 : x
  2. Step 2: Convert to fraction form
    159,146.32/219,622 = 87,531.20/x
  3. Step 3: Cross multiply
    159,146.32x = 219,622 × 87,531.20
  4. Step 4: Simplify right side
    159,146.32x = 19,223,777,206.40
  5. Step 5: Solve for x
    x = 19,223,777,206.40/159,146.32
  6. Step 6: Final answer
    x = 120,793.10

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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.