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Finding the Fourth Proportional to 121,193.60, 167,203.88 and 70,178.48

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Solution

The fourth proportional to 121,193.60, 167,203.88 and 70,178.48 is: 96,821.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,193.60 : 167,203.88 = 70,178.48 : x
  2. Step 2: Convert to fraction form
    121,193.60/167,203.88 = 70,178.48/x
  3. Step 3: Cross multiply
    121,193.60x = 167,203.88 × 70,178.48
  4. Step 4: Simplify right side
    121,193.60x = 11,734,114,148.50
  5. Step 5: Solve for x
    x = 11,734,114,148.50/121,193.60
  6. Step 6: Final answer
    x = 96,821.24

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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.