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Finding the Fourth Proportional to 124,034.40, 186,051.60 and 79,711.20

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Solution

The fourth proportional to 124,034.40, 186,051.60 and 79,711.20 is: 119,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,034.40 : 186,051.60 = 79,711.20 : x
  2. Step 2: Convert to fraction form
    124,034.40/186,051.60 = 79,711.20/x
  3. Step 3: Cross multiply
    124,034.40x = 186,051.60 × 79,711.20
  4. Step 4: Simplify right side
    124,034.40x = 14,830,396,297.92
  5. Step 5: Solve for x
    x = 14,830,396,297.92/124,034.40
  6. Step 6: Final answer
    x = 119,566.80

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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.