Home / 158,731.64-219,053.92-87,114.20

Finding the Fourth Proportional to 158,731.64, 219,053.92 and 87,114.20

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Solution

The fourth proportional to 158,731.64, 219,053.92 and 87,114.20 is: 120,219.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,731.64 : 219,053.92 = 87,114.20 : x
  2. Step 2: Convert to fraction form
    158,731.64/219,053.92 = 87,114.20/x
  3. Step 3: Cross multiply
    158,731.64x = 219,053.92 × 87,114.20
  4. Step 4: Simplify right side
    158,731.64x = 19,082,706,997.66
  5. Step 5: Solve for x
    x = 19,082,706,997.66/158,731.64
  6. Step 6: Final answer
    x = 120,219.94

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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.