Home / 123,507.18-170,435.34-66,917.34

Finding the Fourth Proportional to 123,507.18, 170,435.34 and 66,917.34

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Solution

The fourth proportional to 123,507.18, 170,435.34 and 66,917.34 is: 92,343.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,507.18 : 170,435.34 = 66,917.34 : x
  2. Step 2: Convert to fraction form
    123,507.18/170,435.34 = 66,917.34/x
  3. Step 3: Cross multiply
    123,507.18x = 170,435.34 × 66,917.34
  4. Step 4: Simplify right side
    123,507.18x = 11,405,079,594.80
  5. Step 5: Solve for x
    x = 11,405,079,594.80/123,507.18
  6. Step 6: Final answer
    x = 92,343.45

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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.