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Finding the Fourth Proportional to 117,645.41, 162,348.30 and 63,931.78

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Solution

The fourth proportional to 117,645.41, 162,348.30 and 63,931.78 is: 88,224.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,645.41 : 162,348.30 = 63,931.78 : x
  2. Step 2: Convert to fraction form
    117,645.41/162,348.30 = 63,931.78/x
  3. Step 3: Cross multiply
    117,645.41x = 162,348.30 × 63,931.78
  4. Step 4: Simplify right side
    117,645.41x = 10,379,216,001.91
  5. Step 5: Solve for x
    x = 10,379,216,001.91/117,645.41
  6. Step 6: Final answer
    x = 88,224.57

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1.5x scale

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.