Home / 143,126.86-197,505.93-79,464.64

Finding the Fourth Proportional to 143,126.86, 197,505.93 and 79,464.64

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Solution

The fourth proportional to 143,126.86, 197,505.93 and 79,464.64 is: 109,656.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,126.86 : 197,505.93 = 79,464.64 : x
  2. Step 2: Convert to fraction form
    143,126.86/197,505.93 = 79,464.64/x
  3. Step 3: Cross multiply
    143,126.86x = 197,505.93 × 79,464.64
  4. Step 4: Simplify right side
    143,126.86x = 15,694,737,625.32
  5. Step 5: Solve for x
    x = 15,694,737,625.32/143,126.86
  6. Step 6: Final answer
    x = 109,656.13

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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.