Home / 135,623.60-203,435.40-42,138.80

Finding the Fourth Proportional to 135,623.60, 203,435.40 and 42,138.80

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Solution

The fourth proportional to 135,623.60, 203,435.40 and 42,138.80 is: 63,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,623.60 : 203,435.40 = 42,138.80 : x
  2. Step 2: Convert to fraction form
    135,623.60/203,435.40 = 42,138.80/x
  3. Step 3: Cross multiply
    135,623.60x = 203,435.40 × 42,138.80
  4. Step 4: Simplify right side
    135,623.60x = 8,572,523,633.52
  5. Step 5: Solve for x
    x = 8,572,523,633.52/135,623.60
  6. Step 6: Final answer
    x = 63,208.20

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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.