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Finding the Fourth Proportional to 189,887.85, 262,007.28 and 104,988.51

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Solution

The fourth proportional to 189,887.85, 262,007.28 and 104,988.51 is: 144,863.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,887.85 : 262,007.28 = 104,988.51 : x
  2. Step 2: Convert to fraction form
    189,887.85/262,007.28 = 104,988.51/x
  3. Step 3: Cross multiply
    189,887.85x = 262,007.28 × 104,988.51
  4. Step 4: Simplify right side
    189,887.85x = 27,507,753,936.35
  5. Step 5: Solve for x
    x = 27,507,753,936.35/189,887.85
  6. Step 6: Final answer
    x = 144,863.16

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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.