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Finding the Fourth Proportional to 108,413.60, 162,672.24 and 85,085.60

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Solution

The fourth proportional to 108,413.60, 162,672.24 and 85,085.60 is: 127,669.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,413.60 : 162,672.24 = 85,085.60 : x
  2. Step 2: Convert to fraction form
    108,413.60/162,672.24 = 85,085.60/x
  3. Step 3: Cross multiply
    108,413.60x = 162,672.24 × 85,085.60
  4. Step 4: Simplify right side
    108,413.60x = 13,841,065,143.74
  5. Step 5: Solve for x
    x = 13,841,065,143.74/108,413.60
  6. Step 6: Final answer
    x = 127,669.09

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1.5x scale

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.