Home / 129,089.87-193,220.39-68,968.10

Finding the Fourth Proportional to 129,089.87, 193,220.39 and 68,968.10

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Solution

The fourth proportional to 129,089.87, 193,220.39 and 68,968.10 is: 103,230.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,089.87 : 193,220.39 = 68,968.10 : x
  2. Step 2: Convert to fraction form
    129,089.87/193,220.39 = 68,968.10/x
  3. Step 3: Cross multiply
    129,089.87x = 193,220.39 × 68,968.10
  4. Step 4: Simplify right side
    129,089.87x = 13,326,041,868.62
  5. Step 5: Solve for x
    x = 13,326,041,868.62/129,089.87
  6. Step 6: Final answer
    x = 103,230.74

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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.