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Finding the Fourth Proportional to 111,673.76, 154,122.90 and 66,352.12

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Solution

The fourth proportional to 111,673.76, 154,122.90 and 66,352.12 is: 91,573.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,673.76 : 154,122.90 = 66,352.12 : x
  2. Step 2: Convert to fraction form
    111,673.76/154,122.90 = 66,352.12/x
  3. Step 3: Cross multiply
    111,673.76x = 154,122.90 × 66,352.12
  4. Step 4: Simplify right side
    111,673.76x = 10,226,381,155.55
  5. Step 5: Solve for x
    x = 10,226,381,155.55/111,673.76
  6. Step 6: Final answer
    x = 91,573.72

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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.