Home / 148,128.66-222,123.87-85,816.98

Finding the Fourth Proportional to 148,128.66, 222,123.87 and 85,816.98

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Solution

The fourth proportional to 148,128.66, 222,123.87 and 85,816.98 is: 128,685.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,128.66 : 222,123.87 = 85,816.98 : x
  2. Step 2: Convert to fraction form
    148,128.66/222,123.87 = 85,816.98/x
  3. Step 3: Cross multiply
    148,128.66x = 222,123.87 × 85,816.98
  4. Step 4: Simplify right side
    148,128.66x = 19,061,999,709.31
  5. Step 5: Solve for x
    x = 19,061,999,709.31/148,128.66
  6. Step 6: Final answer
    x = 128,685.43

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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.