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Finding the Fourth Proportional to 121,339.32, 167,443.70 and 67,621.48

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Solution

The fourth proportional to 121,339.32, 167,443.70 and 67,621.48 is: 93,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,339.32 : 167,443.70 = 67,621.48 : x
  2. Step 2: Convert to fraction form
    121,339.32/167,443.70 = 67,621.48/x
  3. Step 3: Cross multiply
    121,339.32x = 167,443.70 × 67,621.48
  4. Step 4: Simplify right side
    121,339.32x = 11,322,790,810.68
  5. Step 5: Solve for x
    x = 11,322,790,810.68/121,339.32
  6. Step 6: Final answer
    x = 93,315.10

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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.