Home / 135,624.71-187,152.93-78,266.45

Finding the Fourth Proportional to 135,624.71, 187,152.93 and 78,266.45

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Solution

The fourth proportional to 135,624.71, 187,152.93 and 78,266.45 is: 108,002.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,624.71 : 187,152.93 = 78,266.45 : x
  2. Step 2: Convert to fraction form
    135,624.71/187,152.93 = 78,266.45/x
  3. Step 3: Cross multiply
    135,624.71x = 187,152.93 × 78,266.45
  4. Step 4: Simplify right side
    135,624.71x = 14,647,795,906.08
  5. Step 5: Solve for x
    x = 14,647,795,906.08/135,624.71
  6. Step 6: Final answer
    x = 108,002.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.