Home / 143,390.18-197,927.67-86,801.57

Finding the Fourth Proportional to 143,390.18, 197,927.67 and 86,801.57

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Solution

The fourth proportional to 143,390.18, 197,927.67 and 86,801.57 is: 119,815.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,390.18 : 197,927.67 = 86,801.57 : x
  2. Step 2: Convert to fraction form
    143,390.18/197,927.67 = 86,801.57/x
  3. Step 3: Cross multiply
    143,390.18x = 197,927.67 × 86,801.57
  4. Step 4: Simplify right side
    143,390.18x = 17,180,432,502.44
  5. Step 5: Solve for x
    x = 17,180,432,502.44/143,390.18
  6. Step 6: Final answer
    x = 119,815.96

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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.