Home / 148,771.76-205,308.60-81,705.20

Finding the Fourth Proportional to 148,771.76, 205,308.60 and 81,705.20

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Solution

The fourth proportional to 148,771.76, 205,308.60 and 81,705.20 is: 112,755.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,771.76 : 205,308.60 = 81,705.20 : x
  2. Step 2: Convert to fraction form
    148,771.76/205,308.60 = 81,705.20/x
  3. Step 3: Cross multiply
    148,771.76x = 205,308.60 × 81,705.20
  4. Step 4: Simplify right side
    148,771.76x = 16,774,780,224.72
  5. Step 5: Solve for x
    x = 16,774,780,224.72/148,771.76
  6. Step 6: Final answer
    x = 112,755.14

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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.