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Finding the Fourth Proportional to 145,803.76, 217,906.75 and 106,443.76

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Solution

The fourth proportional to 145,803.76, 217,906.75 and 106,443.76 is: 159,082.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,803.76 : 217,906.75 = 106,443.76 : x
  2. Step 2: Convert to fraction form
    145,803.76/217,906.75 = 106,443.76/x
  3. Step 3: Cross multiply
    145,803.76x = 217,906.75 × 106,443.76
  4. Step 4: Simplify right side
    145,803.76x = 23,194,813,799.38
  5. Step 5: Solve for x
    x = 23,194,813,799.38/145,803.76
  6. Step 6: Final answer
    x = 159,082.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.