Home / 138,288.62-190,842.14-84,572.66

Finding the Fourth Proportional to 138,288.62, 190,842.14 and 84,572.66

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Solution

The fourth proportional to 138,288.62, 190,842.14 and 84,572.66 is: 116,712.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,288.62 : 190,842.14 = 84,572.66 : x
  2. Step 2: Convert to fraction form
    138,288.62/190,842.14 = 84,572.66/x
  3. Step 3: Cross multiply
    138,288.62x = 190,842.14 × 84,572.66
  4. Step 4: Simplify right side
    138,288.62x = 16,140,027,419.89
  5. Step 5: Solve for x
    x = 16,140,027,419.89/138,288.62
  6. Step 6: Final answer
    x = 116,712.62

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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.