Home / 128,541.70-192,731.55-53,713.90

Finding the Fourth Proportional to 128,541.70, 192,731.55 and 53,713.90

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Solution

The fourth proportional to 128,541.70, 192,731.55 and 53,713.90 is: 80,537.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,541.70 : 192,731.55 = 53,713.90 : x
  2. Step 2: Convert to fraction form
    128,541.70/192,731.55 = 53,713.90/x
  3. Step 3: Cross multiply
    128,541.70x = 192,731.55 × 53,713.90
  4. Step 4: Simplify right side
    128,541.70x = 10,352,363,203.55
  5. Step 5: Solve for x
    x = 10,352,363,203.55/128,541.70
  6. Step 6: Final answer
    x = 80,537.00

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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.