Home / 156,220.11-215,640.36-102,522.51

Finding the Fourth Proportional to 156,220.11, 215,640.36 and 102,522.51

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Solution

The fourth proportional to 156,220.11, 215,640.36 and 102,522.51 is: 141,518.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,220.11 : 215,640.36 = 102,522.51 : x
  2. Step 2: Convert to fraction form
    156,220.11/215,640.36 = 102,522.51/x
  3. Step 3: Cross multiply
    156,220.11x = 215,640.36 × 102,522.51
  4. Step 4: Simplify right side
    156,220.11x = 22,107,990,964.50
  5. Step 5: Solve for x
    x = 22,107,990,964.50/156,220.11
  6. Step 6: Final answer
    x = 141,518.21

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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.