Home / 130,121.24-179,568.70-76,406.90

Finding the Fourth Proportional to 130,121.24, 179,568.70 and 76,406.90

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Solution

The fourth proportional to 130,121.24, 179,568.70 and 76,406.90 is: 105,442.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,121.24 : 179,568.70 = 76,406.90 : x
  2. Step 2: Convert to fraction form
    130,121.24/179,568.70 = 76,406.90/x
  3. Step 3: Cross multiply
    130,121.24x = 179,568.70 × 76,406.90
  4. Step 4: Simplify right side
    130,121.24x = 13,720,286,615.17
  5. Step 5: Solve for x
    x = 13,720,286,615.17/130,121.24
  6. Step 6: Final answer
    x = 105,442.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.