Home / 154,953.20-232,429.80-128,381.15

Finding the Fourth Proportional to 154,953.20, 232,429.80 and 128,381.15

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Solution

The fourth proportional to 154,953.20, 232,429.80 and 128,381.15 is: 192,571.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,953.20 : 232,429.80 = 128,381.15 : x
  2. Step 2: Convert to fraction form
    154,953.20/232,429.80 = 128,381.15/x
  3. Step 3: Cross multiply
    154,953.20x = 232,429.80 × 128,381.15
  4. Step 4: Simplify right side
    154,953.20x = 29,839,605,018.27
  5. Step 5: Solve for x
    x = 29,839,605,018.27/154,953.20
  6. Step 6: Final answer
    x = 192,571.73

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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.