Home / 157,721.24-217,659.04-86,101.80

Finding the Fourth Proportional to 157,721.24, 217,659.04 and 86,101.80

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Solution

The fourth proportional to 157,721.24, 217,659.04 and 86,101.80 is: 118,822.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,721.24 : 217,659.04 = 86,101.80 : x
  2. Step 2: Convert to fraction form
    157,721.24/217,659.04 = 86,101.80/x
  3. Step 3: Cross multiply
    157,721.24x = 217,659.04 × 86,101.80
  4. Step 4: Simplify right side
    157,721.24x = 18,740,835,130.27
  5. Step 5: Solve for x
    x = 18,740,835,130.27/157,721.24
  6. Step 6: Final answer
    x = 118,822.52

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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.