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Finding the Fourth Proportional to 121,043.60, 181,565.40 and 37,926.80

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Solution

The fourth proportional to 121,043.60, 181,565.40 and 37,926.80 is: 56,890.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,043.60 : 181,565.40 = 37,926.80 : x
  2. Step 2: Convert to fraction form
    121,043.60/181,565.40 = 37,926.80/x
  3. Step 3: Cross multiply
    121,043.60x = 181,565.40 × 37,926.80
  4. Step 4: Simplify right side
    121,043.60x = 6,886,194,612.72
  5. Step 5: Solve for x
    x = 6,886,194,612.72/121,043.60
  6. Step 6: Final answer
    x = 56,890.20

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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.