Home / 136,209.18-188,061.28-85,242.56

Finding the Fourth Proportional to 136,209.18, 188,061.28 and 85,242.56

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Solution

The fourth proportional to 136,209.18, 188,061.28 and 85,242.56 is: 117,692.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,209.18 : 188,061.28 = 85,242.56 : x
  2. Step 2: Convert to fraction form
    136,209.18/188,061.28 = 85,242.56/x
  3. Step 3: Cross multiply
    136,209.18x = 188,061.28 × 85,242.56
  4. Step 4: Simplify right side
    136,209.18x = 16,030,824,944.08
  5. Step 5: Solve for x
    x = 16,030,824,944.08/136,209.18
  6. Step 6: Final answer
    x = 117,692.69

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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.