Home / 136,132.80-187,870.56-79,577.28

Finding the Fourth Proportional to 136,132.80, 187,870.56 and 79,577.28

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Solution

The fourth proportional to 136,132.80, 187,870.56 and 79,577.28 is: 109,820.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,132.80 : 187,870.56 = 79,577.28 : x
  2. Step 2: Convert to fraction form
    136,132.80/187,870.56 = 79,577.28/x
  3. Step 3: Cross multiply
    136,132.80x = 187,870.56 × 79,577.28
  4. Step 4: Simplify right side
    136,132.80x = 14,950,228,156.88
  5. Step 5: Solve for x
    x = 14,950,228,156.88/136,132.80
  6. Step 6: Final answer
    x = 109,820.91

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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.