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Finding the Fourth Proportional to 127,403.40, 191,105.10 and 109,907.40

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Solution

The fourth proportional to 127,403.40, 191,105.10 and 109,907.40 is: 164,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,403.40 : 191,105.10 = 109,907.40 : x
  2. Step 2: Convert to fraction form
    127,403.40/191,105.10 = 109,907.40/x
  3. Step 3: Cross multiply
    127,403.40x = 191,105.10 × 109,907.40
  4. Step 4: Simplify right side
    127,403.40x = 21,003,864,667.74
  5. Step 5: Solve for x
    x = 21,003,864,667.74/127,403.40
  6. Step 6: Final answer
    x = 164,861.10

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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.