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Finding the Fourth Proportional to 124,311.60, 186,321.60 and 65,116.80

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Solution

The fourth proportional to 124,311.60, 186,321.60 and 65,116.80 is: 97,598.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,311.60 : 186,321.60 = 65,116.80 : x
  2. Step 2: Convert to fraction form
    124,311.60/186,321.60 = 65,116.80/x
  3. Step 3: Cross multiply
    124,311.60x = 186,321.60 × 65,116.80
  4. Step 4: Simplify right side
    124,311.60x = 12,132,666,362.88
  5. Step 5: Solve for x
    x = 12,132,666,362.88/124,311.60
  6. Step 6: Final answer
    x = 97,598.83

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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.