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Finding the Fourth Proportional to 101,994.39, 153,053.15 and 72,656.19

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Solution

The fourth proportional to 101,994.39, 153,053.15 and 72,656.19 is: 109,028.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,994.39 : 153,053.15 = 72,656.19 : x
  2. Step 2: Convert to fraction form
    101,994.39/153,053.15 = 72,656.19/x
  3. Step 3: Cross multiply
    101,994.39x = 153,053.15 × 72,656.19
  4. Step 4: Simplify right side
    101,994.39x = 11,120,258,383.22
  5. Step 5: Solve for x
    x = 11,120,258,383.22/101,994.39
  6. Step 6: Final answer
    x = 109,028.14

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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.