Home / 130,879.20-196,404.88-71,756.40

Finding the Fourth Proportional to 130,879.20, 196,404.88 and 71,756.40

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Solution

The fourth proportional to 130,879.20, 196,404.88 and 71,756.40 is: 107,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,879.20 : 196,404.88 = 71,756.40 : x
  2. Step 2: Convert to fraction form
    130,879.20/196,404.88 = 71,756.40/x
  3. Step 3: Cross multiply
    130,879.20x = 196,404.88 × 71,756.40
  4. Step 4: Simplify right side
    130,879.20x = 14,093,307,131.23
  5. Step 5: Solve for x
    x = 14,093,307,131.23/130,879.20
  6. Step 6: Final answer
    x = 107,681.79

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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.