Home / 156,398.23-215,690.20-121,951.50

Finding the Fourth Proportional to 156,398.23, 215,690.20 and 121,951.50

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Solution

The fourth proportional to 156,398.23, 215,690.20 and 121,951.50 is: 168,184.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,398.23 : 215,690.20 = 121,951.50 : x
  2. Step 2: Convert to fraction form
    156,398.23/215,690.20 = 121,951.50/x
  3. Step 3: Cross multiply
    156,398.23x = 215,690.20 × 121,951.50
  4. Step 4: Simplify right side
    156,398.23x = 26,303,743,425.30
  5. Step 5: Solve for x
    x = 26,303,743,425.30/156,398.23
  6. Step 6: Final answer
    x = 168,184.41

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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.