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Finding the Fourth Proportional to 130,379.80, 195,423.90 and 74,246.80

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Solution

The fourth proportional to 130,379.80, 195,423.90 and 74,246.80 is: 111,287.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,379.80 : 195,423.90 = 74,246.80 : x
  2. Step 2: Convert to fraction form
    130,379.80/195,423.90 = 74,246.80/x
  3. Step 3: Cross multiply
    130,379.80x = 195,423.90 × 74,246.80
  4. Step 4: Simplify right side
    130,379.80x = 14,509,599,218.52
  5. Step 5: Solve for x
    x = 14,509,599,218.52/130,379.80
  6. Step 6: Final answer
    x = 111,287.17

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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.