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Finding the Fourth Proportional to 127,971.60, 191,955.60 and 57,850.80

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Solution

The fourth proportional to 127,971.60, 191,955.60 and 57,850.80 is: 86,775.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,971.60 : 191,955.60 = 57,850.80 : x
  2. Step 2: Convert to fraction form
    127,971.60/191,955.60 = 57,850.80/x
  3. Step 3: Cross multiply
    127,971.60x = 191,955.60 × 57,850.80
  4. Step 4: Simplify right side
    127,971.60x = 11,104,785,024.48
  5. Step 5: Solve for x
    x = 11,104,785,024.48/127,971.60
  6. Step 6: Final answer
    x = 86,775.39

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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.