Home / 127,938.10-191,905.35-57,817.30

Finding the Fourth Proportional to 127,938.10, 191,905.35 and 57,817.30

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Solution

The fourth proportional to 127,938.10, 191,905.35 and 57,817.30 is: 86,725.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,938.10 : 191,905.35 = 57,817.30 : x
  2. Step 2: Convert to fraction form
    127,938.10/191,905.35 = 57,817.30/x
  3. Step 3: Cross multiply
    127,938.10x = 191,905.35 × 57,817.30
  4. Step 4: Simplify right side
    127,938.10x = 11,095,449,192.56
  5. Step 5: Solve for x
    x = 11,095,449,192.56/127,938.10
  6. Step 6: Final answer
    x = 86,725.14

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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.