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Finding the Fourth Proportional to 151,483.92, 209,048.64 and 87,859.44

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Solution

The fourth proportional to 151,483.92, 209,048.64 and 87,859.44 is: 121,246.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,483.92 : 209,048.64 = 87,859.44 : x
  2. Step 2: Convert to fraction form
    151,483.92/209,048.64 = 87,859.44/x
  3. Step 3: Cross multiply
    151,483.92x = 209,048.64 × 87,859.44
  4. Step 4: Simplify right side
    151,483.92x = 18,366,896,443.16
  5. Step 5: Solve for x
    x = 18,366,896,443.16/151,483.92
  6. Step 6: Final answer
    x = 121,246.51

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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.