Home / 143,328.84-197,761.68-86,739

Finding the Fourth Proportional to 143,328.84, 197,761.68 and 86,739

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Solution

The fourth proportional to 143,328.84, 197,761.68 and 86,739 is: 119,680.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,328.84 : 197,761.68 = 86,739 : x
  2. Step 2: Convert to fraction form
    143,328.84/197,761.68 = 86,739/x
  3. Step 3: Cross multiply
    143,328.84x = 197,761.68 × 86,739
  4. Step 4: Simplify right side
    143,328.84x = 17,153,650,361.52
  5. Step 5: Solve for x
    x = 17,153,650,361.52/143,328.84
  6. Step 6: Final answer
    x = 119,680.38

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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.