Home / 139,388.45-192,360.02-75,730.14

Finding the Fourth Proportional to 139,388.45, 192,360.02 and 75,730.14

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Solution

The fourth proportional to 139,388.45, 192,360.02 and 75,730.14 is: 104,509.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,388.45 : 192,360.02 = 75,730.14 : x
  2. Step 2: Convert to fraction form
    139,388.45/192,360.02 = 75,730.14/x
  3. Step 3: Cross multiply
    139,388.45x = 192,360.02 × 75,730.14
  4. Step 4: Simplify right side
    139,388.45x = 14,567,450,866.35
  5. Step 5: Solve for x
    x = 14,567,450,866.35/139,388.45
  6. Step 6: Final answer
    x = 104,509.75

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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.