Home / 128,273.80-192,281.10-58,203.40

Finding the Fourth Proportional to 128,273.80, 192,281.10 and 58,203.40

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Solution

The fourth proportional to 128,273.80, 192,281.10 and 58,203.40 is: 87,246.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,273.80 : 192,281.10 = 58,203.40 : x
  2. Step 2: Convert to fraction form
    128,273.80/192,281.10 = 58,203.40/x
  3. Step 3: Cross multiply
    128,273.80x = 192,281.10 × 58,203.40
  4. Step 4: Simplify right side
    128,273.80x = 11,191,413,775.74
  5. Step 5: Solve for x
    x = 11,191,413,775.74/128,273.80
  6. Step 6: Final answer
    x = 87,246.29

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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.