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Finding the Fourth Proportional to 131,692.55, 181,738.82 and 75,102.71

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Solution

The fourth proportional to 131,692.55, 181,738.82 and 75,102.71 is: 103,643.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,692.55 : 181,738.82 = 75,102.71 : x
  2. Step 2: Convert to fraction form
    131,692.55/181,738.82 = 75,102.71/x
  3. Step 3: Cross multiply
    131,692.55x = 181,738.82 × 75,102.71
  4. Step 4: Simplify right side
    131,692.55x = 13,649,077,173.26
  5. Step 5: Solve for x
    x = 13,649,077,173.26/131,692.55
  6. Step 6: Final answer
    x = 103,643.51

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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.