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Finding the Fourth Proportional to 115,550.63, 159,404.69 and 72,508.68

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Solution

The fourth proportional to 115,550.63, 159,404.69 and 72,508.68 is: 100,027.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,550.63 : 159,404.69 = 72,508.68 : x
  2. Step 2: Convert to fraction form
    115,550.63/159,404.69 = 72,508.68/x
  3. Step 3: Cross multiply
    115,550.63x = 159,404.69 × 72,508.68
  4. Step 4: Simplify right side
    115,550.63x = 11,558,223,295.17
  5. Step 5: Solve for x
    x = 11,558,223,295.17/115,550.63
  6. Step 6: Final answer
    x = 100,027.35

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1.5x scale

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.