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Finding the Fourth Proportional to 88,579.80, 132,869.70 and 84,740.40

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Solution

The fourth proportional to 88,579.80, 132,869.70 and 84,740.40 is: 127,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,579.80 : 132,869.70 = 84,740.40 : x
  2. Step 2: Convert to fraction form
    88,579.80/132,869.70 = 84,740.40/x
  3. Step 3: Cross multiply
    88,579.80x = 132,869.70 × 84,740.40
  4. Step 4: Simplify right side
    88,579.80x = 11,259,431,525.88
  5. Step 5: Solve for x
    x = 11,259,431,525.88/88,579.80
  6. Step 6: Final answer
    x = 127,110.60

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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.