Home / 115,731.88-159,721.86-70,413.12

Finding the Fourth Proportional to 115,731.88, 159,721.86 and 70,413.12

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Solution

The fourth proportional to 115,731.88, 159,721.86 and 70,413.12 is: 97,177.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,731.88 : 159,721.86 = 70,413.12 : x
  2. Step 2: Convert to fraction form
    115,731.88/159,721.86 = 70,413.12/x
  3. Step 3: Cross multiply
    115,731.88x = 159,721.86 × 70,413.12
  4. Step 4: Simplify right side
    115,731.88x = 11,246,514,494.80
  5. Step 5: Solve for x
    x = 11,246,514,494.80/115,731.88
  6. Step 6: Final answer
    x = 97,177.32

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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.