Home / 113,217.98-156,239.16-65,475.80

Finding the Fourth Proportional to 113,217.98, 156,239.16 and 65,475.80

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Solution

The fourth proportional to 113,217.98, 156,239.16 and 65,475.80 is: 90,355.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,217.98 : 156,239.16 = 65,475.80 : x
  2. Step 2: Convert to fraction form
    113,217.98/156,239.16 = 65,475.80/x
  3. Step 3: Cross multiply
    113,217.98x = 156,239.16 × 65,475.80
  4. Step 4: Simplify right side
    113,217.98x = 10,229,883,992.33
  5. Step 5: Solve for x
    x = 10,229,883,992.33/113,217.98
  6. Step 6: Final answer
    x = 90,355.65

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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.