Home / 127,869.61-191,859.73-68,636.13

Finding the Fourth Proportional to 127,869.61, 191,859.73 and 68,636.13

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Solution

The fourth proportional to 127,869.61, 191,859.73 and 68,636.13 is: 102,983.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,869.61 : 191,859.73 = 68,636.13 : x
  2. Step 2: Convert to fraction form
    127,869.61/191,859.73 = 68,636.13/x
  3. Step 3: Cross multiply
    127,869.61x = 191,859.73 × 68,636.13
  4. Step 4: Simplify right side
    127,869.61x = 13,168,509,198.45
  5. Step 5: Solve for x
    x = 13,168,509,198.45/127,869.61
  6. Step 6: Final answer
    x = 102,983.89

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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.