Home / 135,823.50-187,426.44-78,465.24

Finding the Fourth Proportional to 135,823.50, 187,426.44 and 78,465.24

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Solution

The fourth proportional to 135,823.50, 187,426.44 and 78,465.24 is: 108,276.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,823.50 : 187,426.44 = 78,465.24 : x
  2. Step 2: Convert to fraction form
    135,823.50/187,426.44 = 78,465.24/x
  3. Step 3: Cross multiply
    135,823.50x = 187,426.44 × 78,465.24
  4. Step 4: Simplify right side
    135,823.50x = 14,706,460,596.95
  5. Step 5: Solve for x
    x = 14,706,460,596.95/135,823.50
  6. Step 6: Final answer
    x = 108,276.26

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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.