Home / 137,677.08-189,971.82-81,080.76

Finding the Fourth Proportional to 137,677.08, 189,971.82 and 81,080.76

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Solution

The fourth proportional to 137,677.08, 189,971.82 and 81,080.76 is: 111,878.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,677.08 : 189,971.82 = 81,080.76 : x
  2. Step 2: Convert to fraction form
    137,677.08/189,971.82 = 81,080.76/x
  3. Step 3: Cross multiply
    137,677.08x = 189,971.82 × 81,080.76
  4. Step 4: Simplify right side
    137,677.08x = 15,403,059,544.18
  5. Step 5: Solve for x
    x = 15,403,059,544.18/137,677.08
  6. Step 6: Final answer
    x = 111,878.17

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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.