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Finding the Fourth Proportional to 158,886.68, 219,266.36 and 87,269.72

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Solution

The fourth proportional to 158,886.68, 219,266.36 and 87,269.72 is: 120,433.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,886.68 : 219,266.36 = 87,269.72 : x
  2. Step 2: Convert to fraction form
    158,886.68/219,266.36 = 87,269.72/x
  3. Step 3: Cross multiply
    158,886.68x = 219,266.36 × 87,269.72
  4. Step 4: Simplify right side
    158,886.68x = 19,135,313,842.62
  5. Step 5: Solve for x
    x = 19,135,313,842.62/158,886.68
  6. Step 6: Final answer
    x = 120,433.72

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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.