Home / 143,387.08-197,870.10-79,723.72

Finding the Fourth Proportional to 143,387.08, 197,870.10 and 79,723.72

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Solution

The fourth proportional to 143,387.08, 197,870.10 and 79,723.72 is: 110,016.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,387.08 : 197,870.10 = 79,723.72 : x
  2. Step 2: Convert to fraction form
    143,387.08/197,870.10 = 79,723.72/x
  3. Step 3: Cross multiply
    143,387.08x = 197,870.10 × 79,723.72
  4. Step 4: Simplify right side
    143,387.08x = 15,774,940,448.77
  5. Step 5: Solve for x
    x = 15,774,940,448.77/143,387.08
  6. Step 6: Final answer
    x = 110,016.47

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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.