Home / 135,542.23-187,039.80-75,109.34

Finding the Fourth Proportional to 135,542.23, 187,039.80 and 75,109.34

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Solution

The fourth proportional to 135,542.23, 187,039.80 and 75,109.34 is: 103,646.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,542.23 : 187,039.80 = 75,109.34 : x
  2. Step 2: Convert to fraction form
    135,542.23/187,039.80 = 75,109.34/x
  3. Step 3: Cross multiply
    135,542.23x = 187,039.80 × 75,109.34
  4. Step 4: Simplify right side
    135,542.23x = 14,048,435,931.73
  5. Step 5: Solve for x
    x = 14,048,435,931.73/135,542.23
  6. Step 6: Final answer
    x = 103,646.19

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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.