Home / 123,195.28-170,009.40-66,606.72

Finding the Fourth Proportional to 123,195.28, 170,009.40 and 66,606.72

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Solution

The fourth proportional to 123,195.28, 170,009.40 and 66,606.72 is: 91,917.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,195.28 : 170,009.40 = 66,606.72 : x
  2. Step 2: Convert to fraction form
    123,195.28/170,009.40 = 66,606.72/x
  3. Step 3: Cross multiply
    123,195.28x = 170,009.40 × 66,606.72
  4. Step 4: Simplify right side
    123,195.28x = 11,323,768,503.17
  5. Step 5: Solve for x
    x = 11,323,768,503.17/123,195.28
  6. Step 6: Final answer
    x = 91,917.23

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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.