Home / 130,671.20-195,759.48-77,203.28

Finding the Fourth Proportional to 130,671.20, 195,759.48 and 77,203.28

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Solution

The fourth proportional to 130,671.20, 195,759.48 and 77,203.28 is: 115,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,671.20 : 195,759.48 = 77,203.28 : x
  2. Step 2: Convert to fraction form
    130,671.20/195,759.48 = 77,203.28/x
  3. Step 3: Cross multiply
    130,671.20x = 195,759.48 × 77,203.28
  4. Step 4: Simplify right side
    130,671.20x = 15,113,273,947.09
  5. Step 5: Solve for x
    x = 15,113,273,947.09/130,671.20
  6. Step 6: Final answer
    x = 115,658.80

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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.