Home / 130,840.77-180,580.13-79,883.21

Finding the Fourth Proportional to 130,840.77, 180,580.13 and 79,883.21

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Solution

The fourth proportional to 130,840.77, 180,580.13 and 79,883.21 is: 110,250.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,840.77 : 180,580.13 = 79,883.21 : x
  2. Step 2: Convert to fraction form
    130,840.77/180,580.13 = 79,883.21/x
  3. Step 3: Cross multiply
    130,840.77x = 180,580.13 × 79,883.21
  4. Step 4: Simplify right side
    130,840.77x = 14,425,321,247.56
  5. Step 5: Solve for x
    x = 14,425,321,247.56/130,840.77
  6. Step 6: Final answer
    x = 110,250.97

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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.