Home / 142,434.86-196,552.10-77,891.28

Finding the Fourth Proportional to 142,434.86, 196,552.10 and 77,891.28

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Solution

The fourth proportional to 142,434.86, 196,552.10 and 77,891.28 is: 107,485.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,434.86 : 196,552.10 = 77,891.28 : x
  2. Step 2: Convert to fraction form
    142,434.86/196,552.10 = 77,891.28/x
  3. Step 3: Cross multiply
    142,434.86x = 196,552.10 × 77,891.28
  4. Step 4: Simplify right side
    142,434.86x = 15,309,694,266.23
  5. Step 5: Solve for x
    x = 15,309,694,266.23/142,434.86
  6. Step 6: Final answer
    x = 107,485.59

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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.