Home / 121,876.04-168,180.30-111,837.71

Finding the Fourth Proportional to 121,876.04, 168,180.30 and 111,837.71

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Solution

The fourth proportional to 121,876.04, 168,180.30 and 111,837.71 is: 154,328.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,876.04 : 168,180.30 = 111,837.71 : x
  2. Step 2: Convert to fraction form
    121,876.04/168,180.30 = 111,837.71/x
  3. Step 3: Cross multiply
    121,876.04x = 168,180.30 × 111,837.71
  4. Step 4: Simplify right side
    121,876.04x = 18,808,900,039.56
  5. Step 5: Solve for x
    x = 18,808,900,039.56/121,876.04
  6. Step 6: Final answer
    x = 154,328.12

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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.