Home / 154,854.90-213,686.82-86,862.42

Finding the Fourth Proportional to 154,854.90, 213,686.82 and 86,862.42

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Solution

The fourth proportional to 154,854.90, 213,686.82 and 86,862.42 is: 119,862.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,854.90 : 213,686.82 = 86,862.42 : x
  2. Step 2: Convert to fraction form
    154,854.90/213,686.82 = 86,862.42/x
  3. Step 3: Cross multiply
    154,854.90x = 213,686.82 × 86,862.42
  4. Step 4: Simplify right side
    154,854.90x = 18,561,354,307.30
  5. Step 5: Solve for x
    x = 18,561,354,307.30/154,854.90
  6. Step 6: Final answer
    x = 119,862.88

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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.