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Finding the Fourth Proportional to 121,416.98, 167,557.50 and 66,975.40

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Solution

The fourth proportional to 121,416.98, 167,557.50 and 66,975.40 is: 92,427.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,416.98 : 167,557.50 = 66,975.40 : x
  2. Step 2: Convert to fraction form
    121,416.98/167,557.50 = 66,975.40/x
  3. Step 3: Cross multiply
    121,416.98x = 167,557.50 × 66,975.40
  4. Step 4: Simplify right side
    121,416.98x = 11,222,230,166.61
  5. Step 5: Solve for x
    x = 11,222,230,166.61/121,416.98
  6. Step 6: Final answer
    x = 92,427.19

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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.