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Finding the Fourth Proportional to 140,565.60, 210,520.35 and 137,746.80

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Solution

The fourth proportional to 140,565.60, 210,520.35 and 137,746.80 is: 206,298.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,565.60 : 210,520.35 = 137,746.80 : x
  2. Step 2: Convert to fraction form
    140,565.60/210,520.35 = 137,746.80/x
  3. Step 3: Cross multiply
    140,565.60x = 210,520.35 × 137,746.80
  4. Step 4: Simplify right side
    140,565.60x = 28,998,504,547.38
  5. Step 5: Solve for x
    x = 28,998,504,547.38/140,565.60
  6. Step 6: Final answer
    x = 206,298.73

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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.