Home / 121,427.40-167,541.30-73,679.64

Finding the Fourth Proportional to 121,427.40, 167,541.30 and 73,679.64

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Solution

The fourth proportional to 121,427.40, 167,541.30 and 73,679.64 is: 101,660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,427.40 : 167,541.30 = 73,679.64 : x
  2. Step 2: Convert to fraction form
    121,427.40/167,541.30 = 73,679.64/x
  3. Step 3: Cross multiply
    121,427.40x = 167,541.30 × 73,679.64
  4. Step 4: Simplify right side
    121,427.40x = 12,344,382,669.13
  5. Step 5: Solve for x
    x = 12,344,382,669.13/121,427.40
  6. Step 6: Final answer
    x = 101,660.60

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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.