Home / 135,050.21-202,610.51-78,938.20

Finding the Fourth Proportional to 135,050.21, 202,610.51 and 78,938.20

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Solution

The fourth proportional to 135,050.21, 202,610.51 and 78,938.20 is: 118,427.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,050.21 : 202,610.51 = 78,938.20 : x
  2. Step 2: Convert to fraction form
    135,050.21/202,610.51 = 78,938.20/x
  3. Step 3: Cross multiply
    135,050.21x = 202,610.51 × 78,938.20
  4. Step 4: Simplify right side
    135,050.21x = 15,993,708,960.48
  5. Step 5: Solve for x
    x = 15,993,708,960.48/135,050.21
  6. Step 6: Final answer
    x = 118,427.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.