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Finding the Fourth Proportional to 106,885.68, 147,569.16 and 68,660.64

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Solution

The fourth proportional to 106,885.68, 147,569.16 and 68,660.64 is: 94,794.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,885.68 : 147,569.16 = 68,660.64 : x
  2. Step 2: Convert to fraction form
    106,885.68/147,569.16 = 68,660.64/x
  3. Step 3: Cross multiply
    106,885.68x = 147,569.16 × 68,660.64
  4. Step 4: Simplify right side
    106,885.68x = 10,132,192,969.86
  5. Step 5: Solve for x
    x = 10,132,192,969.86/106,885.68
  6. Step 6: Final answer
    x = 94,794.67

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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.