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Finding the Fourth Proportional to 159,330.16, 219,879.48 and 87,712.48

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Solution

The fourth proportional to 159,330.16, 219,879.48 and 87,712.48 is: 121,045.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,330.16 : 219,879.48 = 87,712.48 : x
  2. Step 2: Convert to fraction form
    159,330.16/219,879.48 = 87,712.48/x
  3. Step 3: Cross multiply
    159,330.16x = 219,879.48 × 87,712.48
  4. Step 4: Simplify right side
    159,330.16x = 19,286,174,491.91
  5. Step 5: Solve for x
    x = 19,286,174,491.91/159,330.16
  6. Step 6: Final answer
    x = 121,045.35

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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.