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Finding the Fourth Proportional to 116,878.40, 175,231.20 and 79,344.80

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Solution

The fourth proportional to 116,878.40, 175,231.20 and 79,344.80 is: 118,958.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,878.40 : 175,231.20 = 79,344.80 : x
  2. Step 2: Convert to fraction form
    116,878.40/175,231.20 = 79,344.80/x
  3. Step 3: Cross multiply
    116,878.40x = 175,231.20 × 79,344.80
  4. Step 4: Simplify right side
    116,878.40x = 13,903,684,517.76
  5. Step 5: Solve for x
    x = 13,903,684,517.76/116,878.40
  6. Step 6: Final answer
    x = 118,958.55

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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.