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Finding the Fourth Proportional to 159,332.80, 219,885.54 and 87,719.48

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Solution

The fourth proportional to 159,332.80, 219,885.54 and 87,719.48 is: 121,056.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,332.80 : 219,885.54 = 87,719.48 : x
  2. Step 2: Convert to fraction form
    159,332.80/219,885.54 = 87,719.48/x
  3. Step 3: Cross multiply
    159,332.80x = 219,885.54 × 87,719.48
  4. Step 4: Simplify right side
    159,332.80x = 19,288,245,228.32
  5. Step 5: Solve for x
    x = 19,288,245,228.32/159,332.80
  6. Step 6: Final answer
    x = 121,056.34

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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.