Home / 121,117.92-167,139.36-67,404.84

Finding the Fourth Proportional to 121,117.92, 167,139.36 and 67,404.84

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Solution

The fourth proportional to 121,117.92, 167,139.36 and 67,404.84 is: 93,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,117.92 : 167,139.36 = 67,404.84 : x
  2. Step 2: Convert to fraction form
    121,117.92/167,139.36 = 67,404.84/x
  3. Step 3: Cross multiply
    121,117.92x = 167,139.36 × 67,404.84
  4. Step 4: Simplify right side
    121,117.92x = 11,266,001,818.50
  5. Step 5: Solve for x
    x = 11,266,001,818.50/121,117.92
  6. Step 6: Final answer
    x = 93,016.80

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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.