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Finding the Fourth Proportional to 121,454.25, 167,621.49 and 71,153.25

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Solution

The fourth proportional to 121,454.25, 167,621.49 and 71,153.25 is: 98,200.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,454.25 : 167,621.49 = 71,153.25 : x
  2. Step 2: Convert to fraction form
    121,454.25/167,621.49 = 71,153.25/x
  3. Step 3: Cross multiply
    121,454.25x = 167,621.49 × 71,153.25
  4. Step 4: Simplify right side
    121,454.25x = 11,926,813,783.34
  5. Step 5: Solve for x
    x = 11,926,813,783.34/121,454.25
  6. Step 6: Final answer
    x = 98,200.05

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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.