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Finding the Fourth Proportional to 107,211.72, 147,903.66 and 66,935.42

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Solution

The fourth proportional to 107,211.72, 147,903.66 and 66,935.42 is: 92,340.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,211.72 : 147,903.66 = 66,935.42 : x
  2. Step 2: Convert to fraction form
    107,211.72/147,903.66 = 66,935.42/x
  3. Step 3: Cross multiply
    107,211.72x = 147,903.66 × 66,935.42
  4. Step 4: Simplify right side
    107,211.72x = 9,899,992,862.12
  5. Step 5: Solve for x
    x = 9,899,992,862.12/107,211.72
  6. Step 6: Final answer
    x = 92,340.58

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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.