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Finding the Fourth Proportional to 119,801.20, 179,701.80 and 77,810.80

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Solution

The fourth proportional to 119,801.20, 179,701.80 and 77,810.80 is: 116,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,801.20 : 179,701.80 = 77,810.80 : x
  2. Step 2: Convert to fraction form
    119,801.20/179,701.80 = 77,810.80/x
  3. Step 3: Cross multiply
    119,801.20x = 179,701.80 × 77,810.80
  4. Step 4: Simplify right side
    119,801.20x = 13,982,740,819.44
  5. Step 5: Solve for x
    x = 13,982,740,819.44/119,801.20
  6. Step 6: Final answer
    x = 116,716.20

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1.5x scale

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.