Home / 138,599.45-191,267.52-74,937.25

Finding the Fourth Proportional to 138,599.45, 191,267.52 and 74,937.25

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Solution

The fourth proportional to 138,599.45, 191,267.52 and 74,937.25 is: 103,413.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,599.45 : 191,267.52 = 74,937.25 : x
  2. Step 2: Convert to fraction form
    138,599.45/191,267.52 = 74,937.25/x
  3. Step 3: Cross multiply
    138,599.45x = 191,267.52 × 74,937.25
  4. Step 4: Simplify right side
    138,599.45x = 14,333,061,963.12
  5. Step 5: Solve for x
    x = 14,333,061,963.12/138,599.45
  6. Step 6: Final answer
    x = 103,413.56

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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.