Home / 135,557.56-187,069.86-75,129.22

Finding the Fourth Proportional to 135,557.56, 187,069.86 and 75,129.22

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Solution

The fourth proportional to 135,557.56, 187,069.86 and 75,129.22 is: 103,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,557.56 : 187,069.86 = 75,129.22 : x
  2. Step 2: Convert to fraction form
    135,557.56/187,069.86 = 75,129.22/x
  3. Step 3: Cross multiply
    135,557.56x = 187,069.86 × 75,129.22
  4. Step 4: Simplify right side
    135,557.56x = 14,054,412,667.31
  5. Step 5: Solve for x
    x = 14,054,412,667.31/135,557.56
  6. Step 6: Final answer
    x = 103,678.56

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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.