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Finding the Fourth Proportional to 105,519.40, 158,667.90 and 88,412.20

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Solution

The fourth proportional to 105,519.40, 158,667.90 and 88,412.20 is: 132,944.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,519.40 : 158,667.90 = 88,412.20 : x
  2. Step 2: Convert to fraction form
    105,519.40/158,667.90 = 88,412.20/x
  3. Step 3: Cross multiply
    105,519.40x = 158,667.90 × 88,412.20
  4. Step 4: Simplify right side
    105,519.40x = 14,028,178,108.38
  5. Step 5: Solve for x
    x = 14,028,178,108.38/105,519.40
  6. Step 6: Final answer
    x = 132,944.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.