Home / 88,979.70-133,469.55-85,869.30

Finding the Fourth Proportional to 88,979.70, 133,469.55 and 85,869.30

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Solution

The fourth proportional to 88,979.70, 133,469.55 and 85,869.30 is: 128,803.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,979.70 : 133,469.55 = 85,869.30 : x
  2. Step 2: Convert to fraction form
    88,979.70/133,469.55 = 85,869.30/x
  3. Step 3: Cross multiply
    88,979.70x = 133,469.55 × 85,869.30
  4. Step 4: Simplify right side
    88,979.70x = 11,460,936,829.82
  5. Step 5: Solve for x
    x = 11,460,936,829.82/88,979.70
  6. Step 6: Final answer
    x = 128,803.95

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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.