Home / 113,050.80-156,013.20-72,842.40

Finding the Fourth Proportional to 113,050.80, 156,013.20 and 72,842.40

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Solution

The fourth proportional to 113,050.80, 156,013.20 and 72,842.40 is: 100,524.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,050.80 : 156,013.20 = 72,842.40 : x
  2. Step 2: Convert to fraction form
    113,050.80/156,013.20 = 72,842.40/x
  3. Step 3: Cross multiply
    113,050.80x = 156,013.20 × 72,842.40
  4. Step 4: Simplify right side
    113,050.80x = 11,364,375,919.68
  5. Step 5: Solve for x
    x = 11,364,375,919.68/113,050.80
  6. Step 6: Final answer
    x = 100,524.51

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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.