Home / 121,515.90-167,624.55-71,205.18

Finding the Fourth Proportional to 121,515.90, 167,624.55 and 71,205.18

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Solution

The fourth proportional to 121,515.90, 167,624.55 and 71,205.18 is: 98,223.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,515.90 : 167,624.55 = 71,205.18 : x
  2. Step 2: Convert to fraction form
    121,515.90/167,624.55 = 71,205.18/x
  3. Step 3: Cross multiply
    121,515.90x = 167,624.55 × 71,205.18
  4. Step 4: Simplify right side
    121,515.90x = 11,935,736,255.17
  5. Step 5: Solve for x
    x = 11,935,736,255.17/121,515.90
  6. Step 6: Final answer
    x = 98,223.66

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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.