Home / 128,233.46-192,178.26-99,804.74

Finding the Fourth Proportional to 128,233.46, 192,178.26 and 99,804.74

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Solution

The fourth proportional to 128,233.46, 192,178.26 and 99,804.74 is: 149,573.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,233.46 : 192,178.26 = 99,804.74 : x
  2. Step 2: Convert to fraction form
    128,233.46/192,178.26 = 99,804.74/x
  3. Step 3: Cross multiply
    128,233.46x = 192,178.26 × 99,804.74
  4. Step 4: Simplify right side
    128,233.46x = 19,180,301,272.95
  5. Step 5: Solve for x
    x = 19,180,301,272.95/128,233.46
  6. Step 6: Final answer
    x = 149,573.30

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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.