Home / 158,828.34-219,181.56-87,207.72

Finding the Fourth Proportional to 158,828.34, 219,181.56 and 87,207.72

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Solution

The fourth proportional to 158,828.34, 219,181.56 and 87,207.72 is: 120,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,828.34 : 219,181.56 = 87,207.72 : x
  2. Step 2: Convert to fraction form
    158,828.34/219,181.56 = 87,207.72/x
  3. Step 3: Cross multiply
    158,828.34x = 219,181.56 × 87,207.72
  4. Step 4: Simplify right side
    158,828.34x = 19,114,324,113.64
  5. Step 5: Solve for x
    x = 19,114,324,113.64/158,828.34
  6. Step 6: Final answer
    x = 120,345.80

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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.