Home / 121,109.38-167,128.86-67,392.88

Finding the Fourth Proportional to 121,109.38, 167,128.86 and 67,392.88

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Solution

The fourth proportional to 121,109.38, 167,128.86 and 67,392.88 is: 93,001.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,109.38 : 167,128.86 = 67,392.88 : x
  2. Step 2: Convert to fraction form
    121,109.38/167,128.86 = 67,392.88/x
  3. Step 3: Cross multiply
    121,109.38x = 167,128.86 × 67,392.88
  4. Step 4: Simplify right side
    121,109.38x = 11,263,295,206.52
  5. Step 5: Solve for x
    x = 11,263,295,206.52/121,109.38
  6. Step 6: Final answer
    x = 93,001.01

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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.