Home / 137,559.90-189,819.54-77,116.68

Finding the Fourth Proportional to 137,559.90, 189,819.54 and 77,116.68

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Solution

The fourth proportional to 137,559.90, 189,819.54 and 77,116.68 is: 106,413.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,559.90 : 189,819.54 = 77,116.68 : x
  2. Step 2: Convert to fraction form
    137,559.90/189,819.54 = 77,116.68/x
  3. Step 3: Cross multiply
    137,559.90x = 189,819.54 × 77,116.68
  4. Step 4: Simplify right side
    137,559.90x = 14,638,252,723.93
  5. Step 5: Solve for x
    x = 14,638,252,723.93/137,559.90
  6. Step 6: Final answer
    x = 106,413.66

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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.