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Finding the Fourth Proportional to 150,803.88, 208,126 and 86,279.10

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Solution

The fourth proportional to 150,803.88, 208,126 and 86,279.10 is: 119,074.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,803.88 : 208,126 = 86,279.10 : x
  2. Step 2: Convert to fraction form
    150,803.88/208,126 = 86,279.10/x
  3. Step 3: Cross multiply
    150,803.88x = 208,126 × 86,279.10
  4. Step 4: Simplify right side
    150,803.88x = 17,956,923,966.60
  5. Step 5: Solve for x
    x = 17,956,923,966.60/150,803.88
  6. Step 6: Final answer
    x = 119,074.68

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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.