Home / 148,612.70-222,538.45-81,978.76

Finding the Fourth Proportional to 148,612.70, 222,538.45 and 81,978.76

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Solution

The fourth proportional to 148,612.70, 222,538.45 and 81,978.76 is: 122,758.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,612.70 : 222,538.45 = 81,978.76 : x
  2. Step 2: Convert to fraction form
    148,612.70/222,538.45 = 81,978.76/x
  3. Step 3: Cross multiply
    148,612.70x = 222,538.45 × 81,978.76
  4. Step 4: Simplify right side
    148,612.70x = 18,243,426,183.32
  5. Step 5: Solve for x
    x = 18,243,426,183.32/148,612.70
  6. Step 6: Final answer
    x = 122,758.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.