Home / 136,599.40-188,506.36-76,170.78

Finding the Fourth Proportional to 136,599.40, 188,506.36 and 76,170.78

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Solution

The fourth proportional to 136,599.40, 188,506.36 and 76,170.78 is: 105,115.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,599.40 : 188,506.36 = 76,170.78 : x
  2. Step 2: Convert to fraction form
    136,599.40/188,506.36 = 76,170.78/x
  3. Step 3: Cross multiply
    136,599.40x = 188,506.36 × 76,170.78
  4. Step 4: Simplify right side
    136,599.40x = 14,358,676,476.16
  5. Step 5: Solve for x
    x = 14,358,676,476.16/136,599.40
  6. Step 6: Final answer
    x = 105,115.22

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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.