Home / 127,938.60-191,592.52-80,435.84

Finding the Fourth Proportional to 127,938.60, 191,592.52 and 80,435.84

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Solution

The fourth proportional to 127,938.60, 191,592.52 and 80,435.84 is: 120,455.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,938.60 : 191,592.52 = 80,435.84 : x
  2. Step 2: Convert to fraction form
    127,938.60/191,592.52 = 80,435.84/x
  3. Step 3: Cross multiply
    127,938.60x = 191,592.52 × 80,435.84
  4. Step 4: Simplify right side
    127,938.60x = 15,410,905,762.90
  5. Step 5: Solve for x
    x = 15,410,905,762.90/127,938.60
  6. Step 6: Final answer
    x = 120,455.48

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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.