Home / 154,637.53-213,396.17-90,979.42

Finding the Fourth Proportional to 154,637.53, 213,396.17 and 90,979.42

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Solution

The fourth proportional to 154,637.53, 213,396.17 and 90,979.42 is: 125,549.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,637.53 : 213,396.17 = 90,979.42 : x
  2. Step 2: Convert to fraction form
    154,637.53/213,396.17 = 90,979.42/x
  3. Step 3: Cross multiply
    154,637.53x = 213,396.17 × 90,979.42
  4. Step 4: Simplify right side
    154,637.53x = 19,414,659,776.82
  5. Step 5: Solve for x
    x = 19,414,659,776.82/154,637.53
  6. Step 6: Final answer
    x = 125,549.47

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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.