Home / 119,629.60-179,638.80-86,581.60

Finding the Fourth Proportional to 119,629.60, 179,638.80 and 86,581.60

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Solution

The fourth proportional to 119,629.60, 179,638.80 and 86,581.60 is: 130,013.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,629.60 : 179,638.80 = 86,581.60 : x
  2. Step 2: Convert to fraction form
    119,629.60/179,638.80 = 86,581.60/x
  3. Step 3: Cross multiply
    119,629.60x = 179,638.80 × 86,581.60
  4. Step 4: Simplify right side
    119,629.60x = 15,553,414,726.08
  5. Step 5: Solve for x
    x = 15,553,414,726.08/119,629.60
  6. Step 6: Final answer
    x = 130,013.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.