Home / 128,799.23-193,310.01-89,384.01

Finding the Fourth Proportional to 128,799.23, 193,310.01 and 89,384.01

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Solution

The fourth proportional to 128,799.23, 193,310.01 and 89,384.01 is: 134,153.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,799.23 : 193,310.01 = 89,384.01 : x
  2. Step 2: Convert to fraction form
    128,799.23/193,310.01 = 89,384.01/x
  3. Step 3: Cross multiply
    128,799.23x = 193,310.01 × 89,384.01
  4. Step 4: Simplify right side
    128,799.23x = 17,278,823,866.94
  5. Step 5: Solve for x
    x = 17,278,823,866.94/128,799.23
  6. Step 6: Final answer
    x = 134,153.17

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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.