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Finding the Fourth Proportional to 156,940, 216,561.04 and 93,265.52

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Solution

The fourth proportional to 156,940, 216,561.04 and 93,265.52 is: 128,696.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,940 : 216,561.04 = 93,265.52 : x
  2. Step 2: Convert to fraction form
    156,940/216,561.04 = 93,265.52/x
  3. Step 3: Cross multiply
    156,940x = 216,561.04 × 93,265.52
  4. Step 4: Simplify right side
    156,940x = 20,197,678,007.34
  5. Step 5: Solve for x
    x = 20,197,678,007.34/156,940
  6. Step 6: Final answer
    x = 128,696.81

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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.