Home / 121,139.31-167,170.54-67,424.34

Finding the Fourth Proportional to 121,139.31, 167,170.54 and 67,424.34

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Solution

The fourth proportional to 121,139.31, 167,170.54 and 67,424.34 is: 93,044.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,139.31 : 167,170.54 = 67,424.34 : x
  2. Step 2: Convert to fraction form
    121,139.31/167,170.54 = 67,424.34/x
  3. Step 3: Cross multiply
    121,139.31x = 167,170.54 × 67,424.34
  4. Step 4: Simplify right side
    121,139.31x = 11,271,363,326.94
  5. Step 5: Solve for x
    x = 11,271,363,326.94/121,139.31
  6. Step 6: Final answer
    x = 93,044.64

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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.