Home / 88,005.60-131,624.40-78,712.80

Finding the Fourth Proportional to 88,005.60, 131,624.40 and 78,712.80

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Solution

The fourth proportional to 88,005.60, 131,624.40 and 78,712.80 is: 117,725.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,005.60 : 131,624.40 = 78,712.80 : x
  2. Step 2: Convert to fraction form
    88,005.60/131,624.40 = 78,712.80/x
  3. Step 3: Cross multiply
    88,005.60x = 131,624.40 × 78,712.80
  4. Step 4: Simplify right side
    88,005.60x = 10,360,525,072.32
  5. Step 5: Solve for x
    x = 10,360,525,072.32/88,005.60
  6. Step 6: Final answer
    x = 117,725.75

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1.5x scale

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.