Home / 134,513.14-185,622.10-77,111.30

Finding the Fourth Proportional to 134,513.14, 185,622.10 and 77,111.30

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Solution

The fourth proportional to 134,513.14, 185,622.10 and 77,111.30 is: 106,410.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,513.14 : 185,622.10 = 77,111.30 : x
  2. Step 2: Convert to fraction form
    134,513.14/185,622.10 = 77,111.30/x
  3. Step 3: Cross multiply
    134,513.14x = 185,622.10 × 77,111.30
  4. Step 4: Simplify right side
    134,513.14x = 14,313,561,439.73
  5. Step 5: Solve for x
    x = 14,313,561,439.73/134,513.14
  6. Step 6: Final answer
    x = 106,410.14

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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.