Home / 127,390.40-191,108.70-103,906.10

Finding the Fourth Proportional to 127,390.40, 191,108.70 and 103,906.10

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Solution

The fourth proportional to 127,390.40, 191,108.70 and 103,906.10 is: 155,877.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,390.40 : 191,108.70 = 103,906.10 : x
  2. Step 2: Convert to fraction form
    127,390.40/191,108.70 = 103,906.10/x
  3. Step 3: Cross multiply
    127,390.40x = 191,108.70 × 103,906.10
  4. Step 4: Simplify right side
    127,390.40x = 19,857,359,693.07
  5. Step 5: Solve for x
    x = 19,857,359,693.07/127,390.40
  6. Step 6: Final answer
    x = 155,877.99

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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.