Home / 135,526.80-187,029.69-78,941.82

Finding the Fourth Proportional to 135,526.80, 187,029.69 and 78,941.82

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Solution

The fourth proportional to 135,526.80, 187,029.69 and 78,941.82 is: 108,941.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,526.80 : 187,029.69 = 78,941.82 : x
  2. Step 2: Convert to fraction form
    135,526.80/187,029.69 = 78,941.82/x
  3. Step 3: Cross multiply
    135,526.80x = 187,029.69 × 78,941.82
  4. Step 4: Simplify right side
    135,526.80x = 14,764,464,122.64
  5. Step 5: Solve for x
    x = 14,764,464,122.64/135,526.80
  6. Step 6: Final answer
    x = 108,941.29

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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.