Home / 121,040.28-167,155.37-99,741.06

Finding the Fourth Proportional to 121,040.28, 167,155.37 and 99,741.06

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Solution

The fourth proportional to 121,040.28, 167,155.37 and 99,741.06 is: 137,741.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,040.28 : 167,155.37 = 99,741.06 : x
  2. Step 2: Convert to fraction form
    121,040.28/167,155.37 = 99,741.06/x
  3. Step 3: Cross multiply
    121,040.28x = 167,155.37 × 99,741.06
  4. Step 4: Simplify right side
    121,040.28x = 16,672,253,289.79
  5. Step 5: Solve for x
    x = 16,672,253,289.79/121,040.28
  6. Step 6: Final answer
    x = 137,741.36

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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.