Home / 88,128.40-131,998.20-53,006.80

Finding the Fourth Proportional to 88,128.40, 131,998.20 and 53,006.80

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Solution

The fourth proportional to 88,128.40, 131,998.20 and 53,006.80 is: 79,393.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,128.40 : 131,998.20 = 53,006.80 : x
  2. Step 2: Convert to fraction form
    88,128.40/131,998.20 = 53,006.80/x
  3. Step 3: Cross multiply
    88,128.40x = 131,998.20 × 53,006.80
  4. Step 4: Simplify right side
    88,128.40x = 6,996,802,187.76
  5. Step 5: Solve for x
    x = 6,996,802,187.76/88,128.40
  6. Step 6: Final answer
    x = 79,393.27

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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.