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Finding the Fourth Proportional to 135,737.10, 203,800.05 and 76,688.10

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Solution

The fourth proportional to 135,737.10, 203,800.05 and 76,688.10 is: 115,141.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,737.10 : 203,800.05 = 76,688.10 : x
  2. Step 2: Convert to fraction form
    135,737.10/203,800.05 = 76,688.10/x
  3. Step 3: Cross multiply
    135,737.10x = 203,800.05 × 76,688.10
  4. Step 4: Simplify right side
    135,737.10x = 15,629,038,614.41
  5. Step 5: Solve for x
    x = 15,629,038,614.41/135,737.10
  6. Step 6: Final answer
    x = 115,141.98

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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.