Home / 113,121.12-156,107.46-62,820.12

Finding the Fourth Proportional to 113,121.12, 156,107.46 and 62,820.12

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Solution

The fourth proportional to 113,121.12, 156,107.46 and 62,820.12 is: 86,691.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,121.12 : 156,107.46 = 62,820.12 : x
  2. Step 2: Convert to fraction form
    113,121.12/156,107.46 = 62,820.12/x
  3. Step 3: Cross multiply
    113,121.12x = 156,107.46 × 62,820.12
  4. Step 4: Simplify right side
    113,121.12x = 9,806,689,055.99
  5. Step 5: Solve for x
    x = 9,806,689,055.99/113,121.12
  6. Step 6: Final answer
    x = 86,691.94

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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.