Home / 121,385.57-181,179.51-113,906.03

Finding the Fourth Proportional to 121,385.57, 181,179.51 and 113,906.03

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Solution

The fourth proportional to 121,385.57, 181,179.51 and 113,906.03 is: 170,015.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,385.57 : 181,179.51 = 113,906.03 : x
  2. Step 2: Convert to fraction form
    121,385.57/181,179.51 = 113,906.03/x
  3. Step 3: Cross multiply
    121,385.57x = 181,179.51 × 113,906.03
  4. Step 4: Simplify right side
    121,385.57x = 20,637,437,368.40
  5. Step 5: Solve for x
    x = 20,637,437,368.40/121,385.57
  6. Step 6: Final answer
    x = 170,015.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.