Home / 112,413.25-155,132.31-61,428.11

Finding the Fourth Proportional to 112,413.25, 155,132.31 and 61,428.11

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Solution

The fourth proportional to 112,413.25, 155,132.31 and 61,428.11 is: 84,771.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,413.25 : 155,132.31 = 61,428.11 : x
  2. Step 2: Convert to fraction form
    112,413.25/155,132.31 = 61,428.11/x
  3. Step 3: Cross multiply
    112,413.25x = 155,132.31 × 61,428.11
  4. Step 4: Simplify right side
    112,413.25x = 9,529,484,057.93
  5. Step 5: Solve for x
    x = 9,529,484,057.93/112,413.25
  6. Step 6: Final answer
    x = 84,771.89

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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.