Home / 127,012.55-190,145.12-84,787.91

Finding the Fourth Proportional to 127,012.55, 190,145.12 and 84,787.91

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Solution

The fourth proportional to 127,012.55, 190,145.12 and 84,787.91 is: 126,932.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,012.55 : 190,145.12 = 84,787.91 : x
  2. Step 2: Convert to fraction form
    127,012.55/190,145.12 = 84,787.91/x
  3. Step 3: Cross multiply
    127,012.55x = 190,145.12 × 84,787.91
  4. Step 4: Simplify right side
    127,012.55x = 16,122,005,946.83
  5. Step 5: Solve for x
    x = 16,122,005,946.83/127,012.55
  6. Step 6: Final answer
    x = 126,932.39

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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.