Home / 154,645.50-213,407.19-90,987.42

Finding the Fourth Proportional to 154,645.50, 213,407.19 and 90,987.42

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Solution

The fourth proportional to 154,645.50, 213,407.19 and 90,987.42 is: 125,560.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,645.50 : 213,407.19 = 90,987.42 : x
  2. Step 2: Convert to fraction form
    154,645.50/213,407.19 = 90,987.42/x
  3. Step 3: Cross multiply
    154,645.50x = 213,407.19 × 90,987.42
  4. Step 4: Simplify right side
    154,645.50x = 19,417,369,627.55
  5. Step 5: Solve for x
    x = 19,417,369,627.55/154,645.50
  6. Step 6: Final answer
    x = 125,560.52

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1.5x scale

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.