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Finding the Fourth Proportional to 115,107.45, 158,827.20 and 64,118.91

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Solution

The fourth proportional to 115,107.45, 158,827.20 and 64,118.91 is: 88,472.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,107.45 : 158,827.20 = 64,118.91 : x
  2. Step 2: Convert to fraction form
    115,107.45/158,827.20 = 64,118.91/x
  3. Step 3: Cross multiply
    115,107.45x = 158,827.20 × 64,118.91
  4. Step 4: Simplify right side
    115,107.45x = 10,183,826,404.11
  5. Step 5: Solve for x
    x = 10,183,826,404.11/115,107.45
  6. Step 6: Final answer
    x = 88,472.35

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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.