Home / 90,770.40-136,208.88-38,175.84

Finding the Fourth Proportional to 90,770.40, 136,208.88 and 38,175.84

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Solution

The fourth proportional to 90,770.40, 136,208.88 and 38,175.84 is: 57,286.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,770.40 : 136,208.88 = 38,175.84 : x
  2. Step 2: Convert to fraction form
    90,770.40/136,208.88 = 38,175.84/x
  3. Step 3: Cross multiply
    90,770.40x = 136,208.88 × 38,175.84
  4. Step 4: Simplify right side
    90,770.40x = 5,199,888,409.46
  5. Step 5: Solve for x
    x = 5,199,888,409.46/90,770.40
  6. Step 6: Final answer
    x = 57,286.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.