Home / 130,893.42-180,627.96-79,991.28

Finding the Fourth Proportional to 130,893.42, 180,627.96 and 79,991.28

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Solution

The fourth proportional to 130,893.42, 180,627.96 and 79,991.28 is: 110,384.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,893.42 : 180,627.96 = 79,991.28 : x
  2. Step 2: Convert to fraction form
    130,893.42/180,627.96 = 79,991.28/x
  3. Step 3: Cross multiply
    130,893.42x = 180,627.96 × 79,991.28
  4. Step 4: Simplify right side
    130,893.42x = 14,448,661,724.19
  5. Step 5: Solve for x
    x = 14,448,661,724.19/130,893.42
  6. Step 6: Final answer
    x = 110,384.94

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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.