Home / 142,867.38-214,345.68-86,003.54

Finding the Fourth Proportional to 142,867.38, 214,345.68 and 86,003.54

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Solution

The fourth proportional to 142,867.38, 214,345.68 and 86,003.54 is: 129,032.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,867.38 : 214,345.68 = 86,003.54 : x
  2. Step 2: Convert to fraction form
    142,867.38/214,345.68 = 86,003.54/x
  3. Step 3: Cross multiply
    142,867.38x = 214,345.68 × 86,003.54
  4. Step 4: Simplify right side
    142,867.38x = 18,434,487,263.71
  5. Step 5: Solve for x
    x = 18,434,487,263.71/142,867.38
  6. Step 6: Final answer
    x = 129,032.16

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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.