Home / 134,615.90-185,771.21-74,188.76

Finding the Fourth Proportional to 134,615.90, 185,771.21 and 74,188.76

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Solution

The fourth proportional to 134,615.90, 185,771.21 and 74,188.76 is: 102,381.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,615.90 : 185,771.21 = 74,188.76 : x
  2. Step 2: Convert to fraction form
    134,615.90/185,771.21 = 74,188.76/x
  3. Step 3: Cross multiply
    134,615.90x = 185,771.21 × 74,188.76
  4. Step 4: Simplify right side
    134,615.90x = 13,782,134,413.80
  5. Step 5: Solve for x
    x = 13,782,134,413.80/134,615.90
  6. Step 6: Final answer
    x = 102,381.18

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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.