Home / 158,721.93-219,035.79-86,124.51

Finding the Fourth Proportional to 158,721.93, 219,035.79 and 86,124.51

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Solution

The fourth proportional to 158,721.93, 219,035.79 and 86,124.51 is: 118,851.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,721.93 : 219,035.79 = 86,124.51 : x
  2. Step 2: Convert to fraction form
    158,721.93/219,035.79 = 86,124.51/x
  3. Step 3: Cross multiply
    158,721.93x = 219,035.79 × 86,124.51
  4. Step 4: Simplify right side
    158,721.93x = 18,864,350,086.21
  5. Step 5: Solve for x
    x = 18,864,350,086.21/158,721.93
  6. Step 6: Final answer
    x = 118,851.57

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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.