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Finding the Fourth Proportional to 100,392.93, 150,776.60 and 88,389.32

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Solution

The fourth proportional to 100,392.93, 150,776.60 and 88,389.32 is: 132,748.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,392.93 : 150,776.60 = 88,389.32 : x
  2. Step 2: Convert to fraction form
    100,392.93/150,776.60 = 88,389.32/x
  3. Step 3: Cross multiply
    100,392.93x = 150,776.60 × 88,389.32
  4. Step 4: Simplify right side
    100,392.93x = 13,327,039,950.08
  5. Step 5: Solve for x
    x = 13,327,039,950.08/100,392.93
  6. Step 6: Final answer
    x = 132,748.79

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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.