Home / 130,533.30-180,131.70-76,821.26

Finding the Fourth Proportional to 130,533.30, 180,131.70 and 76,821.26

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Solution

The fourth proportional to 130,533.30, 180,131.70 and 76,821.26 is: 106,010.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,533.30 : 180,131.70 = 76,821.26 : x
  2. Step 2: Convert to fraction form
    130,533.30/180,131.70 = 76,821.26/x
  3. Step 3: Cross multiply
    130,533.30x = 180,131.70 × 76,821.26
  4. Step 4: Simplify right side
    130,533.30x = 13,837,944,159.94
  5. Step 5: Solve for x
    x = 13,837,944,159.94/130,533.30
  6. Step 6: Final answer
    x = 106,010.84

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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.