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Finding the Fourth Proportional to 121,345.20, 182,017.80 and 110,458.80

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Solution

The fourth proportional to 121,345.20, 182,017.80 and 110,458.80 is: 165,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,345.20 : 182,017.80 = 110,458.80 : x
  2. Step 2: Convert to fraction form
    121,345.20/182,017.80 = 110,458.80/x
  3. Step 3: Cross multiply
    121,345.20x = 182,017.80 × 110,458.80
  4. Step 4: Simplify right side
    121,345.20x = 20,105,467,766.64
  5. Step 5: Solve for x
    x = 20,105,467,766.64/121,345.20
  6. Step 6: Final answer
    x = 165,688.20

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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.