Home / 135,620.28-203,427.72-42,125.76

Finding the Fourth Proportional to 135,620.28, 203,427.72 and 42,125.76

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Solution

The fourth proportional to 135,620.28, 203,427.72 and 42,125.76 is: 63,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,620.28 : 203,427.72 = 42,125.76 : x
  2. Step 2: Convert to fraction form
    135,620.28/203,427.72 = 42,125.76/x
  3. Step 3: Cross multiply
    135,620.28x = 203,427.72 × 42,125.76
  4. Step 4: Simplify right side
    135,620.28x = 8,569,547,310.07
  5. Step 5: Solve for x
    x = 8,569,547,310.07/135,620.28
  6. Step 6: Final answer
    x = 63,187.80

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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.