Home / 135,939.84-187,598.24-79,340.16

Finding the Fourth Proportional to 135,939.84, 187,598.24 and 79,340.16

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Solution

The fourth proportional to 135,939.84, 187,598.24 and 79,340.16 is: 109,490.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,939.84 : 187,598.24 = 79,340.16 : x
  2. Step 2: Convert to fraction form
    135,939.84/187,598.24 = 79,340.16/x
  3. Step 3: Cross multiply
    135,939.84x = 187,598.24 × 79,340.16
  4. Step 4: Simplify right side
    135,939.84x = 14,884,074,377.32
  5. Step 5: Solve for x
    x = 14,884,074,377.32/135,939.84
  6. Step 6: Final answer
    x = 109,490.16

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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.