Home / 154,085.40-231,123.24-91,335.51

Finding the Fourth Proportional to 154,085.40, 231,123.24 and 91,335.51

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Solution

The fourth proportional to 154,085.40, 231,123.24 and 91,335.51 is: 137,000.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,085.40 : 231,123.24 = 91,335.51 : x
  2. Step 2: Convert to fraction form
    154,085.40/231,123.24 = 91,335.51/x
  3. Step 3: Cross multiply
    154,085.40x = 231,123.24 × 91,335.51
  4. Step 4: Simplify right side
    154,085.40x = 21,109,758,998.25
  5. Step 5: Solve for x
    x = 21,109,758,998.25/154,085.40
  6. Step 6: Final answer
    x = 137,000.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.