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Finding the Fourth Proportional to 121,307.87, 167,402.63 and 67,591.73

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Solution

The fourth proportional to 121,307.87, 167,402.63 and 67,591.73 is: 93,275.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,307.87 : 167,402.63 = 67,591.73 : x
  2. Step 2: Convert to fraction form
    121,307.87/167,402.63 = 67,591.73/x
  3. Step 3: Cross multiply
    121,307.87x = 167,402.63 × 67,591.73
  4. Step 4: Simplify right side
    121,307.87x = 11,315,033,368.25
  5. Step 5: Solve for x
    x = 11,315,033,368.25/121,307.87
  6. Step 6: Final answer
    x = 93,275.34

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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.