Home / 135,731.30-187,288.07-77,587.20

Finding the Fourth Proportional to 135,731.30, 187,288.07 and 77,587.20

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Solution

The fourth proportional to 135,731.30, 187,288.07 and 77,587.20 is: 107,058.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,731.30 : 187,288.07 = 77,587.20 : x
  2. Step 2: Convert to fraction form
    135,731.30/187,288.07 = 77,587.20/x
  3. Step 3: Cross multiply
    135,731.30x = 187,288.07 × 77,587.20
  4. Step 4: Simplify right side
    135,731.30x = 14,531,156,556.77
  5. Step 5: Solve for x
    x = 14,531,156,556.77/135,731.30
  6. Step 6: Final answer
    x = 107,058.26

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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.