Home / 110,414.10-165,621.15-78,921.30

Finding the Fourth Proportional to 110,414.10, 165,621.15 and 78,921.30

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Solution

The fourth proportional to 110,414.10, 165,621.15 and 78,921.30 is: 118,381.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,414.10 : 165,621.15 = 78,921.30 : x
  2. Step 2: Convert to fraction form
    110,414.10/165,621.15 = 78,921.30/x
  3. Step 3: Cross multiply
    110,414.10x = 165,621.15 × 78,921.30
  4. Step 4: Simplify right side
    110,414.10x = 13,071,036,465.50
  5. Step 5: Solve for x
    x = 13,071,036,465.50/110,414.10
  6. Step 6: Final answer
    x = 118,381.95

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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.