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Finding the Fourth Proportional to 154,633.52, 213,390.65 and 90,975.42

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Solution

The fourth proportional to 154,633.52, 213,390.65 and 90,975.42 is: 125,543.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,633.52 : 213,390.65 = 90,975.42 : x
  2. Step 2: Convert to fraction form
    154,633.52/213,390.65 = 90,975.42/x
  3. Step 3: Cross multiply
    154,633.52x = 213,390.65 × 90,975.42
  4. Step 4: Simplify right side
    154,633.52x = 19,413,304,235.26
  5. Step 5: Solve for x
    x = 19,413,304,235.26/154,633.52
  6. Step 6: Final answer
    x = 125,543.96

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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.