Home / 117,319.52-161,888.82-71,999.42

Finding the Fourth Proportional to 117,319.52, 161,888.82 and 71,999.42

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Solution

The fourth proportional to 117,319.52, 161,888.82 and 71,999.42 is: 99,351.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,319.52 : 161,888.82 = 71,999.42 : x
  2. Step 2: Convert to fraction form
    117,319.52/161,888.82 = 71,999.42/x
  3. Step 3: Cross multiply
    117,319.52x = 161,888.82 × 71,999.42
  4. Step 4: Simplify right side
    117,319.52x = 11,655,900,335.04
  5. Step 5: Solve for x
    x = 11,655,900,335.04/117,319.52
  6. Step 6: Final answer
    x = 99,351.76

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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.