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Finding the Fourth Proportional to 100,726.70, 139,050.38 and 63,951.39

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Solution

The fourth proportional to 100,726.70, 139,050.38 and 63,951.39 is: 88,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,726.70 : 139,050.38 = 63,951.39 : x
  2. Step 2: Convert to fraction form
    100,726.70/139,050.38 = 63,951.39/x
  3. Step 3: Cross multiply
    100,726.70x = 139,050.38 × 63,951.39
  4. Step 4: Simplify right side
    100,726.70x = 8,892,464,761.27
  5. Step 5: Solve for x
    x = 8,892,464,761.27/100,726.70
  6. Step 6: Final answer
    x = 88,283.10

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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.