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Finding the Fourth Proportional to 135,423.83, 203,135.50 and 40,653.92

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Solution

The fourth proportional to 135,423.83, 203,135.50 and 40,653.92 is: 60,980.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,423.83 : 203,135.50 = 40,653.92 : x
  2. Step 2: Convert to fraction form
    135,423.83/203,135.50 = 40,653.92/x
  3. Step 3: Cross multiply
    135,423.83x = 203,135.50 × 40,653.92
  4. Step 4: Simplify right side
    135,423.83x = 8,258,254,366.16
  5. Step 5: Solve for x
    x = 8,258,254,366.16/135,423.83
  6. Step 6: Final answer
    x = 60,980.81

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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.