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Finding the Fourth Proportional to 101,994.93, 140,707.80 and 67,970.28

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Solution

The fourth proportional to 101,994.93, 140,707.80 and 67,970.28 is: 93,768.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,994.93 : 140,707.80 = 67,970.28 : x
  2. Step 2: Convert to fraction form
    101,994.93/140,707.80 = 67,970.28/x
  3. Step 3: Cross multiply
    101,994.93x = 140,707.80 × 67,970.28
  4. Step 4: Simplify right side
    101,994.93x = 9,563,948,564.18
  5. Step 5: Solve for x
    x = 9,563,948,564.18/101,994.93
  6. Step 6: Final answer
    x = 93,768.86

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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.