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Finding the Fourth Proportional to 79,221.60, 118,218.17 and 70,808.94

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Solution

The fourth proportional to 79,221.60, 118,218.17 and 70,808.94 is: 105,664.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,221.60 : 118,218.17 = 70,808.94 : x
  2. Step 2: Convert to fraction form
    79,221.60/118,218.17 = 70,808.94/x
  3. Step 3: Cross multiply
    79,221.60x = 118,218.17 × 70,808.94
  4. Step 4: Simplify right side
    79,221.60x = 8,370,903,306.44
  5. Step 5: Solve for x
    x = 8,370,903,306.44/79,221.60
  6. Step 6: Final answer
    x = 105,664.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.