Home / 162,121.60-242,707.20-115,465.60

Finding the Fourth Proportional to 162,121.60, 242,707.20 and 115,465.60

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Solution

The fourth proportional to 162,121.60, 242,707.20 and 115,465.60 is: 172,859.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,121.60 : 242,707.20 = 115,465.60 : x
  2. Step 2: Convert to fraction form
    162,121.60/242,707.20 = 115,465.60/x
  3. Step 3: Cross multiply
    162,121.60x = 242,707.20 × 115,465.60
  4. Step 4: Simplify right side
    162,121.60x = 28,024,332,472.32
  5. Step 5: Solve for x
    x = 28,024,332,472.32/162,121.60
  6. Step 6: Final answer
    x = 172,859.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.