Home / 139,979.13-209,925.63-40,112.55

Finding the Fourth Proportional to 139,979.13, 209,925.63 and 40,112.55

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Solution

The fourth proportional to 139,979.13, 209,925.63 and 40,112.55 is: 60,156.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,979.13 : 209,925.63 = 40,112.55 : x
  2. Step 2: Convert to fraction form
    139,979.13/209,925.63 = 40,112.55/x
  3. Step 3: Cross multiply
    139,979.13x = 209,925.63 × 40,112.55
  4. Step 4: Simplify right side
    139,979.13x = 8,420,652,329.66
  5. Step 5: Solve for x
    x = 8,420,652,329.66/139,979.13
  6. Step 6: Final answer
    x = 60,156.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.