Home / 121,292.28-167,325.96-78,835.32

Finding the Fourth Proportional to 121,292.28, 167,325.96 and 78,835.32

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Solution

The fourth proportional to 121,292.28, 167,325.96 and 78,835.32 is: 108,755.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,292.28 : 167,325.96 = 78,835.32 : x
  2. Step 2: Convert to fraction form
    121,292.28/167,325.96 = 78,835.32/x
  3. Step 3: Cross multiply
    121,292.28x = 167,325.96 × 78,835.32
  4. Step 4: Simplify right side
    121,292.28x = 13,191,195,600.91
  5. Step 5: Solve for x
    x = 13,191,195,600.91/121,292.28
  6. Step 6: Final answer
    x = 108,755.44

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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.