Home / 115,429.20-173,143.80-75,512.40

Finding the Fourth Proportional to 115,429.20, 173,143.80 and 75,512.40

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Solution

The fourth proportional to 115,429.20, 173,143.80 and 75,512.40 is: 113,268.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,429.20 : 173,143.80 = 75,512.40 : x
  2. Step 2: Convert to fraction form
    115,429.20/173,143.80 = 75,512.40/x
  3. Step 3: Cross multiply
    115,429.20x = 173,143.80 × 75,512.40
  4. Step 4: Simplify right side
    115,429.20x = 13,074,503,883.12
  5. Step 5: Solve for x
    x = 13,074,503,883.12/115,429.20
  6. Step 6: Final answer
    x = 113,268.60

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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.