Home / 119,829.20-179,743.80-77,838.80

Finding the Fourth Proportional to 119,829.20, 179,743.80 and 77,838.80

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Solution

The fourth proportional to 119,829.20, 179,743.80 and 77,838.80 is: 116,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,829.20 : 179,743.80 = 77,838.80 : x
  2. Step 2: Convert to fraction form
    119,829.20/179,743.80 = 77,838.80/x
  3. Step 3: Cross multiply
    119,829.20x = 179,743.80 × 77,838.80
  4. Step 4: Simplify right side
    119,829.20x = 13,991,041,699.44
  5. Step 5: Solve for x
    x = 13,991,041,699.44/119,829.20
  6. Step 6: Final answer
    x = 116,758.20

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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.