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Finding the Fourth Proportional to 155,471.97, 214,548.79 and 87,488.90

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Solution

The fourth proportional to 155,471.97, 214,548.79 and 87,488.90 is: 120,733.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,471.97 : 214,548.79 = 87,488.90 : x
  2. Step 2: Convert to fraction form
    155,471.97/214,548.79 = 87,488.90/x
  3. Step 3: Cross multiply
    155,471.97x = 214,548.79 × 87,488.90
  4. Step 4: Simplify right side
    155,471.97x = 18,770,637,633.43
  5. Step 5: Solve for x
    x = 18,770,637,633.43/155,471.97
  6. Step 6: Final answer
    x = 120,733.26

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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.