Home / 139,275.09-208,832.51-74,279.31

Finding the Fourth Proportional to 139,275.09, 208,832.51 and 74,279.31

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Solution

The fourth proportional to 139,275.09, 208,832.51 and 74,279.31 is: 111,376.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,275.09 : 208,832.51 = 74,279.31 : x
  2. Step 2: Convert to fraction form
    139,275.09/208,832.51 = 74,279.31/x
  3. Step 3: Cross multiply
    139,275.09x = 208,832.51 × 74,279.31
  4. Step 4: Simplify right side
    139,275.09x = 15,511,933,332.81
  5. Step 5: Solve for x
    x = 15,511,933,332.81/139,275.09
  6. Step 6: Final answer
    x = 111,376.22

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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.