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Finding the Fourth Proportional to 135,697.89, 203,547.36 and 56,756.75

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Solution

The fourth proportional to 135,697.89, 203,547.36 and 56,756.75 is: 85,135.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,697.89 : 203,547.36 = 56,756.75 : x
  2. Step 2: Convert to fraction form
    135,697.89/203,547.36 = 56,756.75/x
  3. Step 3: Cross multiply
    135,697.89x = 203,547.36 × 56,756.75
  4. Step 4: Simplify right side
    135,697.89x = 11,552,685,819.78
  5. Step 5: Solve for x
    x = 11,552,685,819.78/135,697.89
  6. Step 6: Final answer
    x = 85,135.34

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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.