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Finding the Fourth Proportional to 156,552.79, 216,043.27 and 84,932.81

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Solution

The fourth proportional to 156,552.79, 216,043.27 and 84,932.81 is: 117,207.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,552.79 : 216,043.27 = 84,932.81 : x
  2. Step 2: Convert to fraction form
    156,552.79/216,043.27 = 84,932.81/x
  3. Step 3: Cross multiply
    156,552.79x = 216,043.27 × 84,932.81
  4. Step 4: Simplify right side
    156,552.79x = 18,349,162,330.46
  5. Step 5: Solve for x
    x = 18,349,162,330.46/156,552.79
  6. Step 6: Final answer
    x = 117,207.51

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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.