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Finding the Fourth Proportional to 137,281.60, 205,903.20 and 43,796.80

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Solution

The fourth proportional to 137,281.60, 205,903.20 and 43,796.80 is: 65,689.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,281.60 : 205,903.20 = 43,796.80 : x
  2. Step 2: Convert to fraction form
    137,281.60/205,903.20 = 43,796.80/x
  3. Step 3: Cross multiply
    137,281.60x = 205,903.20 × 43,796.80
  4. Step 4: Simplify right side
    137,281.60x = 9,017,901,269.76
  5. Step 5: Solve for x
    x = 9,017,901,269.76/137,281.60
  6. Step 6: Final answer
    x = 65,689.07

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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.