Home / 142,058.80-196,074.64-81,664.48

Finding the Fourth Proportional to 142,058.80, 196,074.64 and 81,664.48

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Solution

The fourth proportional to 142,058.80, 196,074.64 and 81,664.48 is: 112,716.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,058.80 : 196,074.64 = 81,664.48 : x
  2. Step 2: Convert to fraction form
    142,058.80/196,074.64 = 81,664.48/x
  3. Step 3: Cross multiply
    142,058.80x = 196,074.64 × 81,664.48
  4. Step 4: Simplify right side
    142,058.80x = 16,012,333,516.79
  5. Step 5: Solve for x
    x = 16,012,333,516.79/142,058.80
  6. Step 6: Final answer
    x = 112,716.24

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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.