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Finding the Fourth Proportional to 156,151.35, 215,488.62 and 84,531.35

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Solution

The fourth proportional to 156,151.35, 215,488.62 and 84,531.35 is: 116,653.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,151.35 : 215,488.62 = 84,531.35 : x
  2. Step 2: Convert to fraction form
    156,151.35/215,488.62 = 84,531.35/x
  3. Step 3: Cross multiply
    156,151.35x = 215,488.62 × 84,531.35
  4. Step 4: Simplify right side
    156,151.35x = 18,215,544,496.96
  5. Step 5: Solve for x
    x = 18,215,544,496.96/156,151.35
  6. Step 6: Final answer
    x = 116,653.13

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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.