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Finding the Fourth Proportional to 155,857.08, 215,078.46 and 87,873.47

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Solution

The fourth proportional to 155,857.08, 215,078.46 and 87,873.47 is: 121,262.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,857.08 : 215,078.46 = 87,873.47 : x
  2. Step 2: Convert to fraction form
    155,857.08/215,078.46 = 87,873.47/x
  3. Step 3: Cross multiply
    155,857.08x = 215,078.46 × 87,873.47
  4. Step 4: Simplify right side
    155,857.08x = 18,899,689,527.06
  5. Step 5: Solve for x
    x = 18,899,689,527.06/155,857.08
  6. Step 6: Final answer
    x = 121,262.95

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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.