Home / 148,739.76-205,260.85-81,671.76

Finding the Fourth Proportional to 148,739.76, 205,260.85 and 81,671.76

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Solution

The fourth proportional to 148,739.76, 205,260.85 and 81,671.76 is: 112,707.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,739.76 : 205,260.85 = 81,671.76 : x
  2. Step 2: Convert to fraction form
    148,739.76/205,260.85 = 81,671.76/x
  3. Step 3: Cross multiply
    148,739.76x = 205,260.85 × 81,671.76
  4. Step 4: Simplify right side
    148,739.76x = 16,764,014,878.60
  5. Step 5: Solve for x
    x = 16,764,014,878.60/148,739.76
  6. Step 6: Final answer
    x = 112,707.02

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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.