Home / 137,540.70-189,806.01-77,111.36

Finding the Fourth Proportional to 137,540.70, 189,806.01 and 77,111.36

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Solution

The fourth proportional to 137,540.70, 189,806.01 and 77,111.36 is: 106,413.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,540.70 : 189,806.01 = 77,111.36 : x
  2. Step 2: Convert to fraction form
    137,540.70/189,806.01 = 77,111.36/x
  3. Step 3: Cross multiply
    137,540.70x = 189,806.01 × 77,111.36
  4. Step 4: Simplify right side
    137,540.70x = 14,636,199,567.27
  5. Step 5: Solve for x
    x = 14,636,199,567.27/137,540.70
  6. Step 6: Final answer
    x = 106,413.59

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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.