Home / 139,938.11-193,115.47-76,275.75

Finding the Fourth Proportional to 139,938.11, 193,115.47 and 76,275.75

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Solution

The fourth proportional to 139,938.11, 193,115.47 and 76,275.75 is: 105,261.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,938.11 : 193,115.47 = 76,275.75 : x
  2. Step 2: Convert to fraction form
    139,938.11/193,115.47 = 76,275.75/x
  3. Step 3: Cross multiply
    139,938.11x = 193,115.47 × 76,275.75
  4. Step 4: Simplify right side
    139,938.11x = 14,730,027,310.85
  5. Step 5: Solve for x
    x = 14,730,027,310.85/139,938.11
  6. Step 6: Final answer
    x = 105,261.01

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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.