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Finding the Fourth Proportional to 127,671.88, 191,328.54 and 100,900.18

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Solution

The fourth proportional to 127,671.88, 191,328.54 and 100,900.18 is: 151,208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,671.88 : 191,328.54 = 100,900.18 : x
  2. Step 2: Convert to fraction form
    127,671.88/191,328.54 = 100,900.18/x
  3. Step 3: Cross multiply
    127,671.88x = 191,328.54 × 100,900.18
  4. Step 4: Simplify right side
    127,671.88x = 19,305,084,125.14
  5. Step 5: Solve for x
    x = 19,305,084,125.14/127,671.88
  6. Step 6: Final answer
    x = 151,208.58

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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.