Home / 158,983.70-219,398.69-86,387.28

Finding the Fourth Proportional to 158,983.70, 219,398.69 and 86,387.28

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Solution

The fourth proportional to 158,983.70, 219,398.69 and 86,387.28 is: 119,215.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,983.70 : 219,398.69 = 86,387.28 : x
  2. Step 2: Convert to fraction form
    158,983.70/219,398.69 = 86,387.28/x
  3. Step 3: Cross multiply
    158,983.70x = 219,398.69 × 86,387.28
  4. Step 4: Simplify right side
    158,983.70x = 18,953,255,457.89
  5. Step 5: Solve for x
    x = 18,953,255,457.89/158,983.70
  6. Step 6: Final answer
    x = 119,215.09

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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.