Home / 139,940.50-193,115.02-76,277.74

Finding the Fourth Proportional to 139,940.50, 193,115.02 and 76,277.74

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Solution

The fourth proportional to 139,940.50, 193,115.02 and 76,277.74 is: 105,261.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,940.50 : 193,115.02 = 76,277.74 : x
  2. Step 2: Convert to fraction form
    139,940.50/193,115.02 = 76,277.74/x
  3. Step 3: Cross multiply
    139,940.50x = 193,115.02 × 76,277.74
  4. Step 4: Simplify right side
    139,940.50x = 14,730,377,285.65
  5. Step 5: Solve for x
    x = 14,730,377,285.65/139,940.50
  6. Step 6: Final answer
    x = 105,261.72

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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.