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Finding the Fourth Proportional to 158,808.69, 219,158.73 and 87,191.73

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Solution

The fourth proportional to 158,808.69, 219,158.73 and 87,191.73 is: 120,326.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,808.69 : 219,158.73 = 87,191.73 : x
  2. Step 2: Convert to fraction form
    158,808.69/219,158.73 = 87,191.73/x
  3. Step 3: Cross multiply
    158,808.69x = 219,158.73 × 87,191.73
  4. Step 4: Simplify right side
    158,808.69x = 19,108,828,813.30
  5. Step 5: Solve for x
    x = 19,108,828,813.30/158,808.69
  6. Step 6: Final answer
    x = 120,326.09

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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.