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Finding the Fourth Proportional to 158,956.83, 219,357.72 and 87,336.77

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Solution

The fourth proportional to 158,956.83, 219,357.72 and 87,336.77 is: 120,523.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,956.83 : 219,357.72 = 87,336.77 : x
  2. Step 2: Convert to fraction form
    158,956.83/219,357.72 = 87,336.77/x
  3. Step 3: Cross multiply
    158,956.83x = 219,357.72 × 87,336.77
  4. Step 4: Simplify right side
    158,956.83x = 19,157,993,642.58
  5. Step 5: Solve for x
    x = 19,157,993,642.58/158,956.83
  6. Step 6: Final answer
    x = 120,523.25

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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.