Home / 139,943.59-193,120.66-76,280.02

Finding the Fourth Proportional to 139,943.59, 193,120.66 and 76,280.02

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Solution

The fourth proportional to 139,943.59, 193,120.66 and 76,280.02 is: 105,265.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,943.59 : 193,120.66 = 76,280.02 : x
  2. Step 2: Convert to fraction form
    139,943.59/193,120.66 = 76,280.02/x
  3. Step 3: Cross multiply
    139,943.59x = 193,120.66 × 76,280.02
  4. Step 4: Simplify right side
    139,943.59x = 14,731,247,807.21
  5. Step 5: Solve for x
    x = 14,731,247,807.21/139,943.59
  6. Step 6: Final answer
    x = 105,265.61

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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.