Home / 78,092.04-117,136.98-18,928.20

Finding the Fourth Proportional to 78,092.04, 117,136.98 and 18,928.20

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Solution

The fourth proportional to 78,092.04, 117,136.98 and 18,928.20 is: 28,392.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,092.04 : 117,136.98 = 18,928.20 : x
  2. Step 2: Convert to fraction form
    78,092.04/117,136.98 = 18,928.20/x
  3. Step 3: Cross multiply
    78,092.04x = 117,136.98 × 18,928.20
  4. Step 4: Simplify right side
    78,092.04x = 2,217,192,184.84
  5. Step 5: Solve for x
    x = 2,217,192,184.84/78,092.04
  6. Step 6: Final answer
    x = 28,392.04

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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.