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Finding the Fourth Proportional to 141,513.92, 212,095.92 and 71,413.28

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Solution

The fourth proportional to 141,513.92, 212,095.92 and 71,413.28 is: 107,031.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,513.92 : 212,095.92 = 71,413.28 : x
  2. Step 2: Convert to fraction form
    141,513.92/212,095.92 = 71,413.28/x
  3. Step 3: Cross multiply
    141,513.92x = 212,095.92 × 71,413.28
  4. Step 4: Simplify right side
    141,513.92x = 15,146,465,321.82
  5. Step 5: Solve for x
    x = 15,146,465,321.82/141,513.92
  6. Step 6: Final answer
    x = 107,031.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.