Home / 130,520.16-180,150.48-80,190

Finding the Fourth Proportional to 130,520.16, 180,150.48 and 80,190

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Solution

The fourth proportional to 130,520.16, 180,150.48 and 80,190 is: 110,682.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,520.16 : 180,150.48 = 80,190 : x
  2. Step 2: Convert to fraction form
    130,520.16/180,150.48 = 80,190/x
  3. Step 3: Cross multiply
    130,520.16x = 180,150.48 × 80,190
  4. Step 4: Simplify right side
    130,520.16x = 14,446,266,991.20
  5. Step 5: Solve for x
    x = 14,446,266,991.20/130,520.16
  6. Step 6: Final answer
    x = 110,682.27

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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.