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Finding the Fourth Proportional to 156,418.35, 215,857.61 and 84,798.69

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Solution

The fourth proportional to 156,418.35, 215,857.61 and 84,798.69 is: 117,022.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,418.35 : 215,857.61 = 84,798.69 : x
  2. Step 2: Convert to fraction form
    156,418.35/215,857.61 = 84,798.69/x
  3. Step 3: Cross multiply
    156,418.35x = 215,857.61 × 84,798.69
  4. Step 4: Simplify right side
    156,418.35x = 18,304,442,554.53
  5. Step 5: Solve for x
    x = 18,304,442,554.53/156,418.35
  6. Step 6: Final answer
    x = 117,022.35

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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.