Home / 107,220.11-147,960.90-61,896.56

Finding the Fourth Proportional to 107,220.11, 147,960.90 and 61,896.56

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Solution

The fourth proportional to 107,220.11, 147,960.90 and 61,896.56 is: 85,415.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,220.11 : 147,960.90 = 61,896.56 : x
  2. Step 2: Convert to fraction form
    107,220.11/147,960.90 = 61,896.56/x
  3. Step 3: Cross multiply
    107,220.11x = 147,960.90 × 61,896.56
  4. Step 4: Simplify right side
    107,220.11x = 9,158,271,094.41
  5. Step 5: Solve for x
    x = 9,158,271,094.41/107,220.11
  6. Step 6: Final answer
    x = 85,415.61

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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.