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Finding the Fourth Proportional to 155,910.17, 215,156.06 and 84,290.17

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Solution

The fourth proportional to 155,910.17, 215,156.06 and 84,290.17 is: 116,320.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,910.17 : 215,156.06 = 84,290.17 : x
  2. Step 2: Convert to fraction form
    155,910.17/215,156.06 = 84,290.17/x
  3. Step 3: Cross multiply
    155,910.17x = 215,156.06 × 84,290.17
  4. Step 4: Simplify right side
    155,910.17x = 18,135,540,873.93
  5. Step 5: Solve for x
    x = 18,135,540,873.93/155,910.17
  6. Step 6: Final answer
    x = 116,320.45

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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.