Home / 170,869.70-256,304.55-99,719.30

Finding the Fourth Proportional to 170,869.70, 256,304.55 and 99,719.30

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Solution

The fourth proportional to 170,869.70, 256,304.55 and 99,719.30 is: 149,578.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,869.70 : 256,304.55 = 99,719.30 : x
  2. Step 2: Convert to fraction form
    170,869.70/256,304.55 = 99,719.30/x
  3. Step 3: Cross multiply
    170,869.70x = 256,304.55 × 99,719.30
  4. Step 4: Simplify right side
    170,869.70x = 25,558,510,312.82
  5. Step 5: Solve for x
    x = 25,558,510,312.82/170,869.70
  6. Step 6: Final answer
    x = 149,578.95

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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.