Home / 121,116.15-167,138.03-67,400.66

Finding the Fourth Proportional to 121,116.15, 167,138.03 and 67,400.66

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Solution

The fourth proportional to 121,116.15, 167,138.03 and 67,400.66 is: 93,011.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,116.15 : 167,138.03 = 67,400.66 : x
  2. Step 2: Convert to fraction form
    121,116.15/167,138.03 = 67,400.66/x
  3. Step 3: Cross multiply
    121,116.15x = 167,138.03 × 67,400.66
  4. Step 4: Simplify right side
    121,116.15x = 11,265,214,119.45
  5. Step 5: Solve for x
    x = 11,265,214,119.45/121,116.15
  6. Step 6: Final answer
    x = 93,011.66

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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.