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Finding the Fourth Proportional to 156,601.89, 216,108.81 and 84,981.96

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Solution

The fourth proportional to 156,601.89, 216,108.81 and 84,981.96 is: 117,274.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,601.89 : 216,108.81 = 84,981.96 : x
  2. Step 2: Convert to fraction form
    156,601.89/216,108.81 = 84,981.96/x
  3. Step 3: Cross multiply
    156,601.89x = 216,108.81 × 84,981.96
  4. Step 4: Simplify right side
    156,601.89x = 18,365,350,247.07
  5. Step 5: Solve for x
    x = 18,365,350,247.07/156,601.89
  6. Step 6: Final answer
    x = 117,274.13

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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.