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Finding the Fourth Proportional to 100,894.40, 151,305.15 and 40,897.70

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Solution

The fourth proportional to 100,894.40, 151,305.15 and 40,897.70 is: 61,331.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,894.40 : 151,305.15 = 40,897.70 : x
  2. Step 2: Convert to fraction form
    100,894.40/151,305.15 = 40,897.70/x
  3. Step 3: Cross multiply
    100,894.40x = 151,305.15 × 40,897.70
  4. Step 4: Simplify right side
    100,894.40x = 6,188,032,633.16
  5. Step 5: Solve for x
    x = 6,188,032,633.16/100,894.40
  6. Step 6: Final answer
    x = 61,331.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.