Home / 123,221.28-170,044.56-66,632.40

Finding the Fourth Proportional to 123,221.28, 170,044.56 and 66,632.40

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Solution

The fourth proportional to 123,221.28, 170,044.56 and 66,632.40 is: 91,952.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,221.28 : 170,044.56 = 66,632.40 : x
  2. Step 2: Convert to fraction form
    123,221.28/170,044.56 = 66,632.40/x
  3. Step 3: Cross multiply
    123,221.28x = 170,044.56 × 66,632.40
  4. Step 4: Simplify right side
    123,221.28x = 11,330,477,139.74
  5. Step 5: Solve for x
    x = 11,330,477,139.74/123,221.28
  6. Step 6: Final answer
    x = 91,952.28

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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.