Home / 121,158.31-167,203.38-67,439.92

Finding the Fourth Proportional to 121,158.31, 167,203.38 and 67,439.92

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Solution

The fourth proportional to 121,158.31, 167,203.38 and 67,439.92 is: 93,069.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,158.31 : 167,203.38 = 67,439.92 : x
  2. Step 2: Convert to fraction form
    121,158.31/167,203.38 = 67,439.92/x
  3. Step 3: Cross multiply
    121,158.31x = 167,203.38 × 67,439.92
  4. Step 4: Simplify right side
    121,158.31x = 11,276,182,570.93
  5. Step 5: Solve for x
    x = 11,276,182,570.93/121,158.31
  6. Step 6: Final answer
    x = 93,069.82

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1.5x scale

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.