Home / 135,921.59-187,596.23-78,553.05

Finding the Fourth Proportional to 135,921.59, 187,596.23 and 78,553.05

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Solution

The fourth proportional to 135,921.59, 187,596.23 and 78,553.05 is: 108,417.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,921.59 : 187,596.23 = 78,553.05 : x
  2. Step 2: Convert to fraction form
    135,921.59/187,596.23 = 78,553.05/x
  3. Step 3: Cross multiply
    135,921.59x = 187,596.23 × 78,553.05
  4. Step 4: Simplify right side
    135,921.59x = 14,736,256,035.00
  5. Step 5: Solve for x
    x = 14,736,256,035.00/135,921.59
  6. Step 6: Final answer
    x = 108,417.33

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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.