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Finding the Fourth Proportional to 110,854.60, 166,281.90 and 81,330.10

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Solution

The fourth proportional to 110,854.60, 166,281.90 and 81,330.10 is: 121,995.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,854.60 : 166,281.90 = 81,330.10 : x
  2. Step 2: Convert to fraction form
    110,854.60/166,281.90 = 81,330.10/x
  3. Step 3: Cross multiply
    110,854.60x = 166,281.90 × 81,330.10
  4. Step 4: Simplify right side
    110,854.60x = 13,523,723,555.19
  5. Step 5: Solve for x
    x = 13,523,723,555.19/110,854.60
  6. Step 6: Final answer
    x = 121,995.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.