Home / 135,780.18-203,643.90-68,294.22

Finding the Fourth Proportional to 135,780.18, 203,643.90 and 68,294.22

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Solution

The fourth proportional to 135,780.18, 203,643.90 and 68,294.22 is: 102,428.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,780.18 : 203,643.90 = 68,294.22 : x
  2. Step 2: Convert to fraction form
    135,780.18/203,643.90 = 68,294.22/x
  3. Step 3: Cross multiply
    135,780.18x = 203,643.90 × 68,294.22
  4. Step 4: Simplify right side
    135,780.18x = 13,907,701,308.26
  5. Step 5: Solve for x
    x = 13,907,701,308.26/135,780.18
  6. Step 6: Final answer
    x = 102,428.07

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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.