Home / 135,013.14-186,256.08-78,413.58

Finding the Fourth Proportional to 135,013.14, 186,256.08 and 78,413.58

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Solution

The fourth proportional to 135,013.14, 186,256.08 and 78,413.58 is: 108,174.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,013.14 : 186,256.08 = 78,413.58 : x
  2. Step 2: Convert to fraction form
    135,013.14/186,256.08 = 78,413.58/x
  3. Step 3: Cross multiply
    135,013.14x = 186,256.08 × 78,413.58
  4. Step 4: Simplify right side
    135,013.14x = 14,605,006,029.57
  5. Step 5: Solve for x
    x = 14,605,006,029.57/135,013.14
  6. Step 6: Final answer
    x = 108,174.70

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1.5x scale

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.