Home / 137,587.65-189,790.31-86,519.37

Finding the Fourth Proportional to 137,587.65, 189,790.31 and 86,519.37

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Solution

The fourth proportional to 137,587.65, 189,790.31 and 86,519.37 is: 119,346.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,587.65 : 189,790.31 = 86,519.37 : x
  2. Step 2: Convert to fraction form
    137,587.65/189,790.31 = 86,519.37/x
  3. Step 3: Cross multiply
    137,587.65x = 189,790.31 × 86,519.37
  4. Step 4: Simplify right side
    137,587.65x = 16,420,537,620.71
  5. Step 5: Solve for x
    x = 16,420,537,620.71/137,587.65
  6. Step 6: Final answer
    x = 119,346.01

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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.