Home / 121,573.28-167,799.12-71,288.48

Finding the Fourth Proportional to 121,573.28, 167,799.12 and 71,288.48

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Solution

The fourth proportional to 121,573.28, 167,799.12 and 71,288.48 is: 98,394.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,573.28 : 167,799.12 = 71,288.48 : x
  2. Step 2: Convert to fraction form
    121,573.28/167,799.12 = 71,288.48/x
  3. Step 3: Cross multiply
    121,573.28x = 167,799.12 × 71,288.48
  4. Step 4: Simplify right side
    121,573.28x = 11,962,144,210.14
  5. Step 5: Solve for x
    x = 11,962,144,210.14/121,573.28
  6. Step 6: Final answer
    x = 98,394.52

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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.