Home / 137,141.15-189,371.59-86,239.06

Finding the Fourth Proportional to 137,141.15, 189,371.59 and 86,239.06

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Solution

The fourth proportional to 137,141.15, 189,371.59 and 86,239.06 is: 119,083.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,141.15 : 189,371.59 = 86,239.06 : x
  2. Step 2: Convert to fraction form
    137,141.15/189,371.59 = 86,239.06/x
  3. Step 3: Cross multiply
    137,141.15x = 189,371.59 × 86,239.06
  4. Step 4: Simplify right side
    137,141.15x = 16,331,227,223.28
  5. Step 5: Solve for x
    x = 16,331,227,223.28/137,141.15
  6. Step 6: Final answer
    x = 119,083.35

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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.