Home / 128,505.23-192,827.57-53,631.90

Finding the Fourth Proportional to 128,505.23, 192,827.57 and 53,631.90

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Solution

The fourth proportional to 128,505.23, 192,827.57 and 53,631.90 is: 80,476.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,505.23 : 192,827.57 = 53,631.90 : x
  2. Step 2: Convert to fraction form
    128,505.23/192,827.57 = 53,631.90/x
  3. Step 3: Cross multiply
    128,505.23x = 192,827.57 × 53,631.90
  4. Step 4: Simplify right side
    128,505.23x = 10,341,708,683.32
  5. Step 5: Solve for x
    x = 10,341,708,683.32/128,505.23
  6. Step 6: Final answer
    x = 80,476.95

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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.