Home / 158,731.38-219,048.64-87,112.58

Finding the Fourth Proportional to 158,731.38, 219,048.64 and 87,112.58

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Solution

The fourth proportional to 158,731.38, 219,048.64 and 87,112.58 is: 120,215.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,731.38 : 219,048.64 = 87,112.58 : x
  2. Step 2: Convert to fraction form
    158,731.38/219,048.64 = 87,112.58/x
  3. Step 3: Cross multiply
    158,731.38x = 219,048.64 × 87,112.58
  4. Step 4: Simplify right side
    158,731.38x = 19,081,892,175.89
  5. Step 5: Solve for x
    x = 19,081,892,175.89/158,731.38
  6. Step 6: Final answer
    x = 120,215.00

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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.