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Finding the Fourth Proportional to 154,524.69, 213,207.53 and 87,456.69

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Solution

The fourth proportional to 154,524.69, 213,207.53 and 87,456.69 is: 120,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,524.69 : 213,207.53 = 87,456.69 : x
  2. Step 2: Convert to fraction form
    154,524.69/213,207.53 = 87,456.69/x
  3. Step 3: Cross multiply
    154,524.69x = 213,207.53 × 87,456.69
  4. Step 4: Simplify right side
    154,524.69x = 18,646,424,419.59
  5. Step 5: Solve for x
    x = 18,646,424,419.59/154,524.69
  6. Step 6: Final answer
    x = 120,669.55

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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.