Home / 88,271.20-132,212.40-78,421.60

Finding the Fourth Proportional to 88,271.20, 132,212.40 and 78,421.60

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Solution

The fourth proportional to 88,271.20, 132,212.40 and 78,421.60 is: 117,459.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,271.20 : 132,212.40 = 78,421.60 : x
  2. Step 2: Convert to fraction form
    88,271.20/132,212.40 = 78,421.60/x
  3. Step 3: Cross multiply
    88,271.20x = 132,212.40 × 78,421.60
  4. Step 4: Simplify right side
    88,271.20x = 10,368,307,947.84
  5. Step 5: Solve for x
    x = 10,368,307,947.84/88,271.20
  6. Step 6: Final answer
    x = 117,459.69

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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.