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Finding the Fourth Proportional to 124,429.60, 186,644.40 and 45,551.80

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Solution

The fourth proportional to 124,429.60, 186,644.40 and 45,551.80 is: 68,327.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,429.60 : 186,644.40 = 45,551.80 : x
  2. Step 2: Convert to fraction form
    124,429.60/186,644.40 = 45,551.80/x
  3. Step 3: Cross multiply
    124,429.60x = 186,644.40 × 45,551.80
  4. Step 4: Simplify right side
    124,429.60x = 8,501,988,379.92
  5. Step 5: Solve for x
    x = 8,501,988,379.92/124,429.60
  6. Step 6: Final answer
    x = 68,327.70

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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.