Home / 130,920.12-196,245.72-74,645.10

Finding the Fourth Proportional to 130,920.12, 196,245.72 and 74,645.10

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Solution

The fourth proportional to 130,920.12, 196,245.72 and 74,645.10 is: 111,890.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,920.12 : 196,245.72 = 74,645.10 : x
  2. Step 2: Convert to fraction form
    130,920.12/196,245.72 = 74,645.10/x
  3. Step 3: Cross multiply
    130,920.12x = 196,245.72 × 74,645.10
  4. Step 4: Simplify right side
    130,920.12x = 14,648,781,393.97
  5. Step 5: Solve for x
    x = 14,648,781,393.97/130,920.12
  6. Step 6: Final answer
    x = 111,890.99

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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.