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Finding the Fourth Proportional to 189,455, 261,447.93 and 104,572.09

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Solution

The fourth proportional to 189,455, 261,447.93 and 104,572.09 is: 144,309.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,455 : 261,447.93 = 104,572.09 : x
  2. Step 2: Convert to fraction form
    189,455/261,447.93 = 104,572.09/x
  3. Step 3: Cross multiply
    189,455x = 261,447.93 × 104,572.09
  4. Step 4: Simplify right side
    189,455x = 27,340,154,636.17
  5. Step 5: Solve for x
    x = 27,340,154,636.17/189,455
  6. Step 6: Final answer
    x = 144,309.49

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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.