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Finding the Fourth Proportional to 125,465.82, 172,903.86 and 123,159.96

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Solution

The fourth proportional to 125,465.82, 172,903.86 and 123,159.96 is: 169,726.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,465.82 : 172,903.86 = 123,159.96 : x
  2. Step 2: Convert to fraction form
    125,465.82/172,903.86 = 123,159.96/x
  3. Step 3: Cross multiply
    125,465.82x = 172,903.86 × 123,159.96
  4. Step 4: Simplify right side
    125,465.82x = 21,294,832,481.45
  5. Step 5: Solve for x
    x = 21,294,832,481.45/125,465.82
  6. Step 6: Final answer
    x = 169,726.17

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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.