Home / 156,740.20-216,367.67-105,821.88

Finding the Fourth Proportional to 156,740.20, 216,367.67 and 105,821.88

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Solution

The fourth proportional to 156,740.20, 216,367.67 and 105,821.88 is: 146,078.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,740.20 : 216,367.67 = 105,821.88 : x
  2. Step 2: Convert to fraction form
    156,740.20/216,367.67 = 105,821.88/x
  3. Step 3: Cross multiply
    156,740.20x = 216,367.67 × 105,821.88
  4. Step 4: Simplify right side
    156,740.20x = 22,896,433,478.34
  5. Step 5: Solve for x
    x = 22,896,433,478.34/156,740.20
  6. Step 6: Final answer
    x = 146,078.88

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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.