Home / 155,921.63-215,171.66-84,301.48

Finding the Fourth Proportional to 155,921.63, 215,171.66 and 84,301.48

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Solution

The fourth proportional to 155,921.63, 215,171.66 and 84,301.48 is: 116,335.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,921.63 : 215,171.66 = 84,301.48 : x
  2. Step 2: Convert to fraction form
    155,921.63/215,171.66 = 84,301.48/x
  3. Step 3: Cross multiply
    155,921.63x = 215,171.66 × 84,301.48
  4. Step 4: Simplify right side
    155,921.63x = 18,139,287,894.69
  5. Step 5: Solve for x
    x = 18,139,287,894.69/155,921.63
  6. Step 6: Final answer
    x = 116,335.93

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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.