Home / 89,413.84-134,655.67-81,442.36

Finding the Fourth Proportional to 89,413.84, 134,655.67 and 81,442.36

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Solution

The fourth proportional to 89,413.84, 134,655.67 and 81,442.36 is: 122,650.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,413.84 : 134,655.67 = 81,442.36 : x
  2. Step 2: Convert to fraction form
    89,413.84/134,655.67 = 81,442.36/x
  3. Step 3: Cross multiply
    89,413.84x = 134,655.67 × 81,442.36
  4. Step 4: Simplify right side
    89,413.84x = 10,966,675,552.18
  5. Step 5: Solve for x
    x = 10,966,675,552.18/89,413.84
  6. Step 6: Final answer
    x = 122,650.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.