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Finding the Fourth Proportional to 130,169.60, 194,800.80 and 77,616.80

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Solution

The fourth proportional to 130,169.60, 194,800.80 and 77,616.80 is: 116,154.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,169.60 : 194,800.80 = 77,616.80 : x
  2. Step 2: Convert to fraction form
    130,169.60/194,800.80 = 77,616.80/x
  3. Step 3: Cross multiply
    130,169.60x = 194,800.80 × 77,616.80
  4. Step 4: Simplify right side
    130,169.60x = 15,119,814,733.44
  5. Step 5: Solve for x
    x = 15,119,814,733.44/130,169.60
  6. Step 6: Final answer
    x = 116,154.73

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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.