Home / 127,084.74-190,494.09-42,815.78

Finding the Fourth Proportional to 127,084.74, 190,494.09 and 42,815.78

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Solution

The fourth proportional to 127,084.74, 190,494.09 and 42,815.78 is: 64,178.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,084.74 : 190,494.09 = 42,815.78 : x
  2. Step 2: Convert to fraction form
    127,084.74/190,494.09 = 42,815.78/x
  3. Step 3: Cross multiply
    127,084.74x = 190,494.09 × 42,815.78
  4. Step 4: Simplify right side
    127,084.74x = 8,156,153,524.98
  5. Step 5: Solve for x
    x = 8,156,153,524.98/127,084.74
  6. Step 6: Final answer
    x = 64,178.86

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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.