Home / 121,806.23-168,102.32-70,139.43

Finding the Fourth Proportional to 121,806.23, 168,102.32 and 70,139.43

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Solution

The fourth proportional to 121,806.23, 168,102.32 and 70,139.43 is: 96,798.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,806.23 : 168,102.32 = 70,139.43 : x
  2. Step 2: Convert to fraction form
    121,806.23/168,102.32 = 70,139.43/x
  3. Step 3: Cross multiply
    121,806.23x = 168,102.32 × 70,139.43
  4. Step 4: Simplify right side
    121,806.23x = 11,790,600,555.78
  5. Step 5: Solve for x
    x = 11,790,600,555.78/121,806.23
  6. Step 6: Final answer
    x = 96,798.01

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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.