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Finding the Fourth Proportional to 106,604.78, 147,056.36 and 74,288.21

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Solution

The fourth proportional to 106,604.78, 147,056.36 and 74,288.21 is: 102,477.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,604.78 : 147,056.36 = 74,288.21 : x
  2. Step 2: Convert to fraction form
    106,604.78/147,056.36 = 74,288.21/x
  3. Step 3: Cross multiply
    106,604.78x = 147,056.36 × 74,288.21
  4. Step 4: Simplify right side
    106,604.78x = 10,924,552,646.79
  5. Step 5: Solve for x
    x = 10,924,552,646.79/106,604.78
  6. Step 6: Final answer
    x = 102,477.14

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1.5x scale

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.