Home / 100,333.77-138,463.25-56,722.85

Finding the Fourth Proportional to 100,333.77, 138,463.25 and 56,722.85

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Solution

The fourth proportional to 100,333.77, 138,463.25 and 56,722.85 is: 78,279.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,333.77 : 138,463.25 = 56,722.85 : x
  2. Step 2: Convert to fraction form
    100,333.77/138,463.25 = 56,722.85/x
  3. Step 3: Cross multiply
    100,333.77x = 138,463.25 × 56,722.85
  4. Step 4: Simplify right side
    100,333.77x = 7,854,029,876.65
  5. Step 5: Solve for x
    x = 7,854,029,876.65/100,333.77
  6. Step 6: Final answer
    x = 78,279.03

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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.