Home / 79,209.24-118,518.57-78,323.46

Finding the Fourth Proportional to 79,209.24, 118,518.57 and 78,323.46

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Solution

The fourth proportional to 79,209.24, 118,518.57 and 78,323.46 is: 117,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,209.24 : 118,518.57 = 78,323.46 : x
  2. Step 2: Convert to fraction form
    79,209.24/118,518.57 = 78,323.46/x
  3. Step 3: Cross multiply
    79,209.24x = 118,518.57 × 78,323.46
  4. Step 4: Simplify right side
    79,209.24x = 9,282,784,476.65
  5. Step 5: Solve for x
    x = 9,282,784,476.65/79,209.24
  6. Step 6: Final answer
    x = 117,193.20

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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.