Home / 109,445.12-163,955.24-71,891.24

Finding the Fourth Proportional to 109,445.12, 163,955.24 and 71,891.24

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Solution

The fourth proportional to 109,445.12, 163,955.24 and 71,891.24 is: 107,697.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,445.12 : 163,955.24 = 71,891.24 : x
  2. Step 2: Convert to fraction form
    109,445.12/163,955.24 = 71,891.24/x
  3. Step 3: Cross multiply
    109,445.12x = 163,955.24 × 71,891.24
  4. Step 4: Simplify right side
    109,445.12x = 11,786,945,508.10
  5. Step 5: Solve for x
    x = 11,786,945,508.10/109,445.12
  6. Step 6: Final answer
    x = 107,697.31

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1.5x scale

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.