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Finding the Fourth Proportional to 123,413.63, 170,312.02 and 66,826.22

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Solution

The fourth proportional to 123,413.63, 170,312.02 and 66,826.22 is: 92,220.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,413.63 : 170,312.02 = 66,826.22 : x
  2. Step 2: Convert to fraction form
    123,413.63/170,312.02 = 66,826.22/x
  3. Step 3: Cross multiply
    123,413.63x = 170,312.02 × 66,826.22
  4. Step 4: Simplify right side
    123,413.63x = 11,381,307,498.54
  5. Step 5: Solve for x
    x = 11,381,307,498.54/123,413.63
  6. Step 6: Final answer
    x = 92,220.83

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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.