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Finding the Fourth Proportional to 101,632.85, 140,257.02 and 61,338.74

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Solution

The fourth proportional to 101,632.85, 140,257.02 and 61,338.74 is: 84,649.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,632.85 : 140,257.02 = 61,338.74 : x
  2. Step 2: Convert to fraction form
    101,632.85/140,257.02 = 61,338.74/x
  3. Step 3: Cross multiply
    101,632.85x = 140,257.02 × 61,338.74
  4. Step 4: Simplify right side
    101,632.85x = 8,603,189,250.08
  5. Step 5: Solve for x
    x = 8,603,189,250.08/101,632.85
  6. Step 6: Final answer
    x = 84,649.69

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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.