Home / 120,631.83-180,763.22-64,479.93

Finding the Fourth Proportional to 120,631.83, 180,763.22 and 64,479.93

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Solution

The fourth proportional to 120,631.83, 180,763.22 and 64,479.93 is: 96,621.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,631.83 : 180,763.22 = 64,479.93 : x
  2. Step 2: Convert to fraction form
    120,631.83/180,763.22 = 64,479.93/x
  3. Step 3: Cross multiply
    120,631.83x = 180,763.22 × 64,479.93
  4. Step 4: Simplify right side
    120,631.83x = 11,655,599,449.78
  5. Step 5: Solve for x
    x = 11,655,599,449.78/120,631.83
  6. Step 6: Final answer
    x = 96,621.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.