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Finding the Fourth Proportional to 108,985.68, 150,413.68 and 61,238

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Solution

The fourth proportional to 108,985.68, 150,413.68 and 61,238 is: 84,515.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,985.68 : 150,413.68 = 61,238 : x
  2. Step 2: Convert to fraction form
    108,985.68/150,413.68 = 61,238/x
  3. Step 3: Cross multiply
    108,985.68x = 150,413.68 × 61,238
  4. Step 4: Simplify right side
    108,985.68x = 9,211,032,935.84
  5. Step 5: Solve for x
    x = 9,211,032,935.84/108,985.68
  6. Step 6: Final answer
    x = 84,515.99

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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.