Home / 92,403.09-137,936.21-81,193.05

Finding the Fourth Proportional to 92,403.09, 137,936.21 and 81,193.05

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Solution

The fourth proportional to 92,403.09, 137,936.21 and 81,193.05 is: 121,202.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,403.09 : 137,936.21 = 81,193.05 : x
  2. Step 2: Convert to fraction form
    92,403.09/137,936.21 = 81,193.05/x
  3. Step 3: Cross multiply
    92,403.09x = 137,936.21 × 81,193.05
  4. Step 4: Simplify right side
    92,403.09x = 11,199,461,189.38
  5. Step 5: Solve for x
    x = 11,199,461,189.38/92,403.09
  6. Step 6: Final answer
    x = 121,202.24

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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.