Home / 109,773.09-151,423.68-66,135.33

Finding the Fourth Proportional to 109,773.09, 151,423.68 and 66,135.33

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Solution

The fourth proportional to 109,773.09, 151,423.68 and 66,135.33 is: 91,228.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,773.09 : 151,423.68 = 66,135.33 : x
  2. Step 2: Convert to fraction form
    109,773.09/151,423.68 = 66,135.33/x
  3. Step 3: Cross multiply
    109,773.09x = 151,423.68 × 66,135.33
  4. Step 4: Simplify right side
    109,773.09x = 10,014,455,046.61
  5. Step 5: Solve for x
    x = 10,014,455,046.61/109,773.09
  6. Step 6: Final answer
    x = 91,228.69

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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.