Home / 134,405.92-201,332.32-78,868

Finding the Fourth Proportional to 134,405.92, 201,332.32 and 78,868

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Solution

The fourth proportional to 134,405.92, 201,332.32 and 78,868 is: 118,139.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,405.92 : 201,332.32 = 78,868 : x
  2. Step 2: Convert to fraction form
    134,405.92/201,332.32 = 78,868/x
  3. Step 3: Cross multiply
    134,405.92x = 201,332.32 × 78,868
  4. Step 4: Simplify right side
    134,405.92x = 15,878,677,413.76
  5. Step 5: Solve for x
    x = 15,878,677,413.76/134,405.92
  6. Step 6: Final answer
    x = 118,139.72

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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.