Home / 121,002.08-166,958.40-70,691.36

Finding the Fourth Proportional to 121,002.08, 166,958.40 and 70,691.36

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Solution

The fourth proportional to 121,002.08, 166,958.40 and 70,691.36 is: 97,539.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,002.08 : 166,958.40 = 70,691.36 : x
  2. Step 2: Convert to fraction form
    121,002.08/166,958.40 = 70,691.36/x
  3. Step 3: Cross multiply
    121,002.08x = 166,958.40 × 70,691.36
  4. Step 4: Simplify right side
    121,002.08x = 11,802,516,359.42
  5. Step 5: Solve for x
    x = 11,802,516,359.42/121,002.08
  6. Step 6: Final answer
    x = 97,539.78

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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.