Home / 143,394.32-197,901-86,805.20

Finding the Fourth Proportional to 143,394.32, 197,901 and 86,805.20

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Solution

The fourth proportional to 143,394.32, 197,901 and 86,805.20 is: 119,801.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,394.32 : 197,901 = 86,805.20 : x
  2. Step 2: Convert to fraction form
    143,394.32/197,901 = 86,805.20/x
  3. Step 3: Cross multiply
    143,394.32x = 197,901 × 86,805.20
  4. Step 4: Simplify right side
    143,394.32x = 17,178,835,885.20
  5. Step 5: Solve for x
    x = 17,178,835,885.20/143,394.32
  6. Step 6: Final answer
    x = 119,801.37

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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.