Home / 121,188.42-167,239.64-67,472.04

Finding the Fourth Proportional to 121,188.42, 167,239.64 and 67,472.04

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Solution

The fourth proportional to 121,188.42, 167,239.64 and 67,472.04 is: 93,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,188.42 : 167,239.64 = 67,472.04 : x
  2. Step 2: Convert to fraction form
    121,188.42/167,239.64 = 67,472.04/x
  3. Step 3: Cross multiply
    121,188.42x = 167,239.64 × 67,472.04
  4. Step 4: Simplify right side
    121,188.42x = 11,283,999,679.67
  5. Step 5: Solve for x
    x = 11,283,999,679.67/121,188.42
  6. Step 6: Final answer
    x = 93,111.20

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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.