Home / 135,553.47-187,050.45-78,198.03

Finding the Fourth Proportional to 135,553.47, 187,050.45 and 78,198.03

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Solution

The fourth proportional to 135,553.47, 187,050.45 and 78,198.03 is: 107,905.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,553.47 : 187,050.45 = 78,198.03 : x
  2. Step 2: Convert to fraction form
    135,553.47/187,050.45 = 78,198.03/x
  3. Step 3: Cross multiply
    135,553.47x = 187,050.45 × 78,198.03
  4. Step 4: Simplify right side
    135,553.47x = 14,626,976,700.61
  5. Step 5: Solve for x
    x = 14,626,976,700.61/135,553.47
  6. Step 6: Final answer
    x = 107,905.59

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1.5x scale

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.