Home / 139,133.19-208,708.06-53,744.69

Finding the Fourth Proportional to 139,133.19, 208,708.06 and 53,744.69

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Solution

The fourth proportional to 139,133.19, 208,708.06 and 53,744.69 is: 80,620.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,133.19 : 208,708.06 = 53,744.69 : x
  2. Step 2: Convert to fraction form
    139,133.19/208,708.06 = 53,744.69/x
  3. Step 3: Cross multiply
    139,133.19x = 208,708.06 × 53,744.69
  4. Step 4: Simplify right side
    139,133.19x = 11,216,949,985.20
  5. Step 5: Solve for x
    x = 11,216,949,985.20/139,133.19
  6. Step 6: Final answer
    x = 80,620.23

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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.