Home / 158,270.43-218,413.83-86,657.12

Finding the Fourth Proportional to 158,270.43, 218,413.83 and 86,657.12

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Solution

The fourth proportional to 158,270.43, 218,413.83 and 86,657.12 is: 119,587.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,270.43 : 218,413.83 = 86,657.12 : x
  2. Step 2: Convert to fraction form
    158,270.43/218,413.83 = 86,657.12/x
  3. Step 3: Cross multiply
    158,270.43x = 218,413.83 × 86,657.12
  4. Step 4: Simplify right side
    158,270.43x = 18,927,112,383.90
  5. Step 5: Solve for x
    x = 18,927,112,383.90/158,270.43
  6. Step 6: Final answer
    x = 119,587.17

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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.