Home / 130,669.20-195,756.48-77,201.28

Finding the Fourth Proportional to 130,669.20, 195,756.48 and 77,201.28

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Solution

The fourth proportional to 130,669.20, 195,756.48 and 77,201.28 is: 115,655.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,669.20 : 195,756.48 = 77,201.28 : x
  2. Step 2: Convert to fraction form
    130,669.20/195,756.48 = 77,201.28/x
  3. Step 3: Cross multiply
    130,669.20x = 195,756.48 × 77,201.28
  4. Step 4: Simplify right side
    130,669.20x = 15,112,650,824.29
  5. Step 5: Solve for x
    x = 15,112,650,824.29/130,669.20
  6. Step 6: Final answer
    x = 115,655.80

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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.