Home / 127,540.30-191,184.90-71,407.30

Finding the Fourth Proportional to 127,540.30, 191,184.90 and 71,407.30

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Solution

The fourth proportional to 127,540.30, 191,184.90 and 71,407.30 is: 107,040.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,540.30 : 191,184.90 = 71,407.30 : x
  2. Step 2: Convert to fraction form
    127,540.30/191,184.90 = 71,407.30/x
  3. Step 3: Cross multiply
    127,540.30x = 191,184.90 × 71,407.30
  4. Step 4: Simplify right side
    127,540.30x = 13,651,997,509.77
  5. Step 5: Solve for x
    x = 13,651,997,509.77/127,540.30
  6. Step 6: Final answer
    x = 107,040.66

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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.