Home / 157,721.37-217,659.21-86,101.92

Finding the Fourth Proportional to 157,721.37, 217,659.21 and 86,101.92

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Solution

The fourth proportional to 157,721.37, 217,659.21 and 86,101.92 is: 118,822.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,721.37 : 217,659.21 = 86,101.92 : x
  2. Step 2: Convert to fraction form
    157,721.37/217,659.21 = 86,101.92/x
  3. Step 3: Cross multiply
    157,721.37x = 217,659.21 × 86,101.92
  4. Step 4: Simplify right side
    157,721.37x = 18,740,875,886.68
  5. Step 5: Solve for x
    x = 18,740,875,886.68/157,721.37
  6. Step 6: Final answer
    x = 118,822.68

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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.