Home / 154,868.88-213,706.12-86,876.40

Finding the Fourth Proportional to 154,868.88, 213,706.12 and 86,876.40

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Solution

The fourth proportional to 154,868.88, 213,706.12 and 86,876.40 is: 119,882.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,868.88 : 213,706.12 = 86,876.40 : x
  2. Step 2: Convert to fraction form
    154,868.88/213,706.12 = 86,876.40/x
  3. Step 3: Cross multiply
    154,868.88x = 213,706.12 × 86,876.40
  4. Step 4: Simplify right side
    154,868.88x = 18,566,018,363.57
  5. Step 5: Solve for x
    x = 18,566,018,363.57/154,868.88
  6. Step 6: Final answer
    x = 119,882.18

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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.