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Finding the Fourth Proportional to 113,484, 156,612.78 and 63,183

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Solution

The fourth proportional to 113,484, 156,612.78 and 63,183 is: 87,195.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,484 : 156,612.78 = 63,183 : x
  2. Step 2: Convert to fraction form
    113,484/156,612.78 = 63,183/x
  3. Step 3: Cross multiply
    113,484x = 156,612.78 × 63,183
  4. Step 4: Simplify right side
    113,484x = 9,895,265,278.74
  5. Step 5: Solve for x
    x = 9,895,265,278.74/113,484
  6. Step 6: Final answer
    x = 87,195.25

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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.