Home / 113,763.20-170,774.40-67,042.40

Finding the Fourth Proportional to 113,763.20, 170,774.40 and 67,042.40

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Solution

The fourth proportional to 113,763.20, 170,774.40 and 67,042.40 is: 100,639.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,763.20 : 170,774.40 = 67,042.40 : x
  2. Step 2: Convert to fraction form
    113,763.20/170,774.40 = 67,042.40/x
  3. Step 3: Cross multiply
    113,763.20x = 170,774.40 × 67,042.40
  4. Step 4: Simplify right side
    113,763.20x = 11,449,125,634.56
  5. Step 5: Solve for x
    x = 11,449,125,634.56/113,763.20
  6. Step 6: Final answer
    x = 100,639.98

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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.