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Finding the Fourth Proportional to 99,736.60, 149,386.20 and 88,655.80

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Solution

The fourth proportional to 99,736.60, 149,386.20 and 88,655.80 is: 132,789.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,736.60 : 149,386.20 = 88,655.80 : x
  2. Step 2: Convert to fraction form
    99,736.60/149,386.20 = 88,655.80/x
  3. Step 3: Cross multiply
    99,736.60x = 149,386.20 × 88,655.80
  4. Step 4: Simplify right side
    99,736.60x = 13,243,953,069.96
  5. Step 5: Solve for x
    x = 13,243,953,069.96/99,736.60
  6. Step 6: Final answer
    x = 132,789.30

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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.