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Finding the Fourth Proportional to 159,074.69, 219,524.31 and 86,477.55

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Solution

The fourth proportional to 159,074.69, 219,524.31 and 86,477.55 is: 119,339.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,074.69 : 219,524.31 = 86,477.55 : x
  2. Step 2: Convert to fraction form
    159,074.69/219,524.31 = 86,477.55/x
  3. Step 3: Cross multiply
    159,074.69x = 219,524.31 × 86,477.55
  4. Step 4: Simplify right side
    159,074.69x = 18,983,924,494.24
  5. Step 5: Solve for x
    x = 18,983,924,494.24/159,074.69
  6. Step 6: Final answer
    x = 119,339.70

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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.