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Finding the Fourth Proportional to 99,157.68, 136,786.84 and 63,310

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Solution

The fourth proportional to 99,157.68, 136,786.84 and 63,310 is: 87,335.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,157.68 : 136,786.84 = 63,310 : x
  2. Step 2: Convert to fraction form
    99,157.68/136,786.84 = 63,310/x
  3. Step 3: Cross multiply
    99,157.68x = 136,786.84 × 63,310
  4. Step 4: Simplify right side
    99,157.68x = 8,659,974,840.40
  5. Step 5: Solve for x
    x = 8,659,974,840.40/99,157.68
  6. Step 6: Final answer
    x = 87,335.39

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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.