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Finding the Fourth Proportional to 156,600.19, 216,108.84 and 84,980.19

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Solution

The fourth proportional to 156,600.19, 216,108.84 and 84,980.19 is: 117,272.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,600.19 : 216,108.84 = 84,980.19 : x
  2. Step 2: Convert to fraction form
    156,600.19/216,108.84 = 84,980.19/x
  3. Step 3: Cross multiply
    156,600.19x = 216,108.84 × 84,980.19
  4. Step 4: Simplify right side
    156,600.19x = 18,364,969,480.33
  5. Step 5: Solve for x
    x = 18,364,969,480.33/156,600.19
  6. Step 6: Final answer
    x = 117,272.97

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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.