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Finding the Fourth Proportional to 88,099.40, 131,930.40 and 70,603.40

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Solution

The fourth proportional to 88,099.40, 131,930.40 and 70,603.40 is: 105,729.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,099.40 : 131,930.40 = 70,603.40 : x
  2. Step 2: Convert to fraction form
    88,099.40/131,930.40 = 70,603.40/x
  3. Step 3: Cross multiply
    88,099.40x = 131,930.40 × 70,603.40
  4. Step 4: Simplify right side
    88,099.40x = 9,314,734,803.36
  5. Step 5: Solve for x
    x = 9,314,734,803.36/88,099.40
  6. Step 6: Final answer
    x = 105,729.83

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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.