Home / 112,401.81-155,112.65-61,413.44

Finding the Fourth Proportional to 112,401.81, 155,112.65 and 61,413.44

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Solution

The fourth proportional to 112,401.81, 155,112.65 and 61,413.44 is: 84,749.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,401.81 : 155,112.65 = 61,413.44 : x
  2. Step 2: Convert to fraction form
    112,401.81/155,112.65 = 61,413.44/x
  3. Step 3: Cross multiply
    112,401.81x = 155,112.65 × 61,413.44
  4. Step 4: Simplify right side
    112,401.81x = 9,526,001,424.02
  5. Step 5: Solve for x
    x = 9,526,001,424.02/112,401.81
  6. Step 6: Final answer
    x = 84,749.54

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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.