Home / 129,007.64-193,509.46-90,899.36

Finding the Fourth Proportional to 129,007.64, 193,509.46 and 90,899.36

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Solution

The fourth proportional to 129,007.64, 193,509.46 and 90,899.36 is: 136,347.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,007.64 : 193,509.46 = 90,899.36 : x
  2. Step 2: Convert to fraction form
    129,007.64/193,509.46 = 90,899.36/x
  3. Step 3: Cross multiply
    129,007.64x = 193,509.46 × 90,899.36
  4. Step 4: Simplify right side
    129,007.64x = 17,589,886,067.95
  5. Step 5: Solve for x
    x = 17,589,886,067.95/129,007.64
  6. Step 6: Final answer
    x = 136,347.63

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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.