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Finding the Fourth Proportional to 139,150.40, 208,554.40 and 64,166.40

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Solution

The fourth proportional to 139,150.40, 208,554.40 and 64,166.40 is: 96,170.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,150.40 : 208,554.40 = 64,166.40 : x
  2. Step 2: Convert to fraction form
    139,150.40/208,554.40 = 64,166.40/x
  3. Step 3: Cross multiply
    139,150.40x = 208,554.40 × 64,166.40
  4. Step 4: Simplify right side
    139,150.40x = 13,382,185,052.16
  5. Step 5: Solve for x
    x = 13,382,185,052.16/139,150.40
  6. Step 6: Final answer
    x = 96,170.65

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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.