Home / 106,617.75-147,145.46-61,905.75

Finding the Fourth Proportional to 106,617.75, 147,145.46 and 61,905.75

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Solution

The fourth proportional to 106,617.75, 147,145.46 and 61,905.75 is: 85,437.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,617.75 : 147,145.46 = 61,905.75 : x
  2. Step 2: Convert to fraction form
    106,617.75/147,145.46 = 61,905.75/x
  3. Step 3: Cross multiply
    106,617.75x = 147,145.46 × 61,905.75
  4. Step 4: Simplify right side
    106,617.75x = 9,109,150,060.40
  5. Step 5: Solve for x
    x = 9,109,150,060.40/106,617.75
  6. Step 6: Final answer
    x = 85,437.46

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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.