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Finding the Fourth Proportional to 137,820.40, 206,453.80 and 62,837.40

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Solution

The fourth proportional to 137,820.40, 206,453.80 and 62,837.40 is: 94,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,820.40 : 206,453.80 = 62,837.40 : x
  2. Step 2: Convert to fraction form
    137,820.40/206,453.80 = 62,837.40/x
  3. Step 3: Cross multiply
    137,820.40x = 206,453.80 × 62,837.40
  4. Step 4: Simplify right side
    137,820.40x = 12,973,020,170.62
  5. Step 5: Solve for x
    x = 12,973,020,170.62/137,820.40
  6. Step 6: Final answer
    x = 94,129.90

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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.