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Finding the Fourth Proportional to 101,809.20, 140,569.56 and 67,897.74

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Solution

The fourth proportional to 101,809.20, 140,569.56 and 67,897.74 is: 93,747.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,809.20 : 140,569.56 = 67,897.74 : x
  2. Step 2: Convert to fraction form
    101,809.20/140,569.56 = 67,897.74/x
  3. Step 3: Cross multiply
    101,809.20x = 140,569.56 × 67,897.74
  4. Step 4: Simplify right side
    101,809.20x = 9,544,355,436.79
  5. Step 5: Solve for x
    x = 9,544,355,436.79/101,809.20
  6. Step 6: Final answer
    x = 93,747.48

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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.