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Finding the Fourth Proportional to 88,430.40, 132,559.20 and 79,099.20

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Solution

The fourth proportional to 88,430.40, 132,559.20 and 79,099.20 is: 118,571.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,430.40 : 132,559.20 = 79,099.20 : x
  2. Step 2: Convert to fraction form
    88,430.40/132,559.20 = 79,099.20/x
  3. Step 3: Cross multiply
    88,430.40x = 132,559.20 × 79,099.20
  4. Step 4: Simplify right side
    88,430.40x = 10,485,326,672.64
  5. Step 5: Solve for x
    x = 10,485,326,672.64/88,430.40
  6. Step 6: Final answer
    x = 118,571.52

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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.