Home / 135,703.85-187,271.46-79,126.16

Finding the Fourth Proportional to 135,703.85, 187,271.46 and 79,126.16

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Solution

The fourth proportional to 135,703.85, 187,271.46 and 79,126.16 is: 109,194.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,703.85 : 187,271.46 = 79,126.16 : x
  2. Step 2: Convert to fraction form
    135,703.85/187,271.46 = 79,126.16/x
  3. Step 3: Cross multiply
    135,703.85x = 187,271.46 × 79,126.16
  4. Step 4: Simplify right side
    135,703.85x = 14,818,070,175.41
  5. Step 5: Solve for x
    x = 14,818,070,175.41/135,703.85
  6. Step 6: Final answer
    x = 109,194.18

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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.