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Finding the Fourth Proportional to 104,645.64, 142,478.94 and 104,313.48

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Solution

The fourth proportional to 104,645.64, 142,478.94 and 104,313.48 is: 142,026.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,645.64 : 142,478.94 = 104,313.48 : x
  2. Step 2: Convert to fraction form
    104,645.64/142,478.94 = 104,313.48/x
  3. Step 3: Cross multiply
    104,645.64x = 142,478.94 × 104,313.48
  4. Step 4: Simplify right side
    104,645.64x = 14,862,474,058.11
  5. Step 5: Solve for x
    x = 14,862,474,058.11/104,645.64
  6. Step 6: Final answer
    x = 142,026.69

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.