Home / 155,864.07-215,090.91-86,954.13

Finding the Fourth Proportional to 155,864.07, 215,090.91 and 86,954.13

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Solution

The fourth proportional to 155,864.07, 215,090.91 and 86,954.13 is: 119,995.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,864.07 : 215,090.91 = 86,954.13 : x
  2. Step 2: Convert to fraction form
    155,864.07/215,090.91 = 86,954.13/x
  3. Step 3: Cross multiply
    155,864.07x = 215,090.91 × 86,954.13
  4. Step 4: Simplify right side
    155,864.07x = 18,703,042,949.96
  5. Step 5: Solve for x
    x = 18,703,042,949.96/155,864.07
  6. Step 6: Final answer
    x = 119,995.86

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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.