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Finding the Fourth Proportional to 156,063.15, 215,367.12 and 84,443.22

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Solution

The fourth proportional to 156,063.15, 215,367.12 and 84,443.22 is: 116,531.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,063.15 : 215,367.12 = 84,443.22 : x
  2. Step 2: Convert to fraction form
    156,063.15/215,367.12 = 84,443.22/x
  3. Step 3: Cross multiply
    156,063.15x = 215,367.12 × 84,443.22
  4. Step 4: Simplify right side
    156,063.15x = 18,186,293,094.93
  5. Step 5: Solve for x
    x = 18,186,293,094.93/156,063.15
  6. Step 6: Final answer
    x = 116,531.63

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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.