Home / 135,705.47-203,271.14-85,759.85

Finding the Fourth Proportional to 135,705.47, 203,271.14 and 85,759.85

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Solution

The fourth proportional to 135,705.47, 203,271.14 and 85,759.85 is: 128,458.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,705.47 : 203,271.14 = 85,759.85 : x
  2. Step 2: Convert to fraction form
    135,705.47/203,271.14 = 85,759.85/x
  3. Step 3: Cross multiply
    135,705.47x = 203,271.14 × 85,759.85
  4. Step 4: Simplify right side
    135,705.47x = 17,432,501,030.57
  5. Step 5: Solve for x
    x = 17,432,501,030.57/135,705.47
  6. Step 6: Final answer
    x = 128,458.36

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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.