Home / 139,390.76-192,358.73-75,728.00

Finding the Fourth Proportional to 139,390.76, 192,358.73 and 75,728.00

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Solution

The fourth proportional to 139,390.76, 192,358.73 and 75,728.00 is: 104,504.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,390.76 : 192,358.73 = 75,728.00 : x
  2. Step 2: Convert to fraction form
    139,390.76/192,358.73 = 75,728.00/x
  3. Step 3: Cross multiply
    139,390.76x = 192,358.73 × 75,728.00
  4. Step 4: Simplify right side
    139,390.76x = 14,566,940,943.65
  5. Step 5: Solve for x
    x = 14,566,940,943.65/139,390.76
  6. Step 6: Final answer
    x = 104,504.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.