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Finding the Fourth Proportional to 156,604.61, 216,114.93 and 84,984.62

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Solution

The fourth proportional to 156,604.61, 216,114.93 and 84,984.62 is: 117,279.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,604.61 : 216,114.93 = 84,984.62 : x
  2. Step 2: Convert to fraction form
    156,604.61/216,114.93 = 84,984.62/x
  3. Step 3: Cross multiply
    156,604.61x = 216,114.93 × 84,984.62
  4. Step 4: Simplify right side
    156,604.61x = 18,366,444,121.80
  5. Step 5: Solve for x
    x = 18,366,444,121.80/156,604.61
  6. Step 6: Final answer
    x = 117,279.08

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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.