Home / 135,678.15-187,236.90-75,245.40

Finding the Fourth Proportional to 135,678.15, 187,236.90 and 75,245.40

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Solution

The fourth proportional to 135,678.15, 187,236.90 and 75,245.40 is: 103,839.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,678.15 : 187,236.90 = 75,245.40 : x
  2. Step 2: Convert to fraction form
    135,678.15/187,236.90 = 75,245.40/x
  3. Step 3: Cross multiply
    135,678.15x = 187,236.90 × 75,245.40
  4. Step 4: Simplify right side
    135,678.15x = 14,088,715,435.26
  5. Step 5: Solve for x
    x = 14,088,715,435.26/135,678.15
  6. Step 6: Final answer
    x = 103,839.24

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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.