Home / 128,800.34-177,539.09-101,531.96

Finding the Fourth Proportional to 128,800.34, 177,539.09 and 101,531.96

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Solution

The fourth proportional to 128,800.34, 177,539.09 and 101,531.96 is: 139,952.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,800.34 : 177,539.09 = 101,531.96 : x
  2. Step 2: Convert to fraction form
    128,800.34/177,539.09 = 101,531.96/x
  3. Step 3: Cross multiply
    128,800.34x = 177,539.09 × 101,531.96
  4. Step 4: Simplify right side
    128,800.34x = 18,025,891,554.86
  5. Step 5: Solve for x
    x = 18,025,891,554.86/128,800.34
  6. Step 6: Final answer
    x = 139,952.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.