Home / 104,146.28-143,721.80-56,399.64

Finding the Fourth Proportional to 104,146.28, 143,721.80 and 56,399.64

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Solution

The fourth proportional to 104,146.28, 143,721.80 and 56,399.64 is: 77,831.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,146.28 : 143,721.80 = 56,399.64 : x
  2. Step 2: Convert to fraction form
    104,146.28/143,721.80 = 56,399.64/x
  3. Step 3: Cross multiply
    104,146.28x = 143,721.80 × 56,399.64
  4. Step 4: Simplify right side
    104,146.28x = 8,105,857,780.15
  5. Step 5: Solve for x
    x = 8,105,857,780.15/104,146.28
  6. Step 6: Final answer
    x = 77,831.47

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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.