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Finding the Fourth Proportional to 156,472.84, 215,932.48 and 84,853

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Solution

The fourth proportional to 156,472.84, 215,932.48 and 84,853 is: 117,097.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,472.84 : 215,932.48 = 84,853 : x
  2. Step 2: Convert to fraction form
    156,472.84/215,932.48 = 84,853/x
  3. Step 3: Cross multiply
    156,472.84x = 215,932.48 × 84,853
  4. Step 4: Simplify right side
    156,472.84x = 18,322,518,725.44
  5. Step 5: Solve for x
    x = 18,322,518,725.44/156,472.84
  6. Step 6: Final answer
    x = 117,097.12

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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.