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Finding the Fourth Proportional to 156,372, 215,792.15 and 84,750.18

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Solution

The fourth proportional to 156,372, 215,792.15 and 84,750.18 is: 116,954.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,372 : 215,792.15 = 84,750.18 : x
  2. Step 2: Convert to fraction form
    156,372/215,792.15 = 84,750.18/x
  3. Step 3: Cross multiply
    156,372x = 215,792.15 × 84,750.18
  4. Step 4: Simplify right side
    156,372x = 18,288,423,131.34
  5. Step 5: Solve for x
    x = 18,288,423,131.34/156,372
  6. Step 6: Final answer
    x = 116,954.59

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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.