Home / 128,828.47-193,152.15-56,747.17

Finding the Fourth Proportional to 128,828.47, 193,152.15 and 56,747.17

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Solution

The fourth proportional to 128,828.47, 193,152.15 and 56,747.17 is: 85,080.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,828.47 : 193,152.15 = 56,747.17 : x
  2. Step 2: Convert to fraction form
    128,828.47/193,152.15 = 56,747.17/x
  3. Step 3: Cross multiply
    128,828.47x = 193,152.15 × 56,747.17
  4. Step 4: Simplify right side
    128,828.47x = 10,960,837,891.92
  5. Step 5: Solve for x
    x = 10,960,837,891.92/128,828.47
  6. Step 6: Final answer
    x = 85,080.87

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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.