Home / 107,220.30-147,961.16-61,896.75

Finding the Fourth Proportional to 107,220.30, 147,961.16 and 61,896.75

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Solution

The fourth proportional to 107,220.30, 147,961.16 and 61,896.75 is: 85,415.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,220.30 : 147,961.16 = 61,896.75 : x
  2. Step 2: Convert to fraction form
    107,220.30/147,961.16 = 61,896.75/x
  3. Step 3: Cross multiply
    107,220.30x = 147,961.16 × 61,896.75
  4. Step 4: Simplify right side
    107,220.30x = 9,158,314,852.86
  5. Step 5: Solve for x
    x = 9,158,314,852.86/107,220.30
  6. Step 6: Final answer
    x = 85,415.87

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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.