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Finding the Fourth Proportional to 88,140.40, 132,016.20 and 53,018.80

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Solution

The fourth proportional to 88,140.40, 132,016.20 and 53,018.80 is: 79,411.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,140.40 : 132,016.20 = 53,018.80 : x
  2. Step 2: Convert to fraction form
    88,140.40/132,016.20 = 53,018.80/x
  3. Step 3: Cross multiply
    88,140.40x = 132,016.20 × 53,018.80
  4. Step 4: Simplify right side
    88,140.40x = 6,999,340,504.56
  5. Step 5: Solve for x
    x = 6,999,340,504.56/88,140.40
  6. Step 6: Final answer
    x = 79,411.26

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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.