Home / 130,893.13-180,627.78-79,991.02

Finding the Fourth Proportional to 130,893.13, 180,627.78 and 79,991.02

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Solution

The fourth proportional to 130,893.13, 180,627.78 and 79,991.02 is: 110,384.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,893.13 : 180,627.78 = 79,991.02 : x
  2. Step 2: Convert to fraction form
    130,893.13/180,627.78 = 79,991.02/x
  3. Step 3: Cross multiply
    130,893.13x = 180,627.78 × 79,991.02
  4. Step 4: Simplify right side
    130,893.13x = 14,448,600,362.54
  5. Step 5: Solve for x
    x = 14,448,600,362.54/130,893.13
  6. Step 6: Final answer
    x = 110,384.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.