Home / 113,103.15-155,995.85-76,832.57

Finding the Fourth Proportional to 113,103.15, 155,995.85 and 76,832.57

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Solution

The fourth proportional to 113,103.15, 155,995.85 and 76,832.57 is: 105,970.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,103.15 : 155,995.85 = 76,832.57 : x
  2. Step 2: Convert to fraction form
    113,103.15/155,995.85 = 76,832.57/x
  3. Step 3: Cross multiply
    113,103.15x = 155,995.85 × 76,832.57
  4. Step 4: Simplify right side
    113,103.15x = 11,985,560,900.69
  5. Step 5: Solve for x
    x = 11,985,560,900.69/113,103.15
  6. Step 6: Final answer
    x = 105,970.18

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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.