Home / 128,262.26-176,887.32-80,520.06

Finding the Fourth Proportional to 128,262.26, 176,887.32 and 80,520.06

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Solution

The fourth proportional to 128,262.26, 176,887.32 and 80,520.06 is: 111,045.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,262.26 : 176,887.32 = 80,520.06 : x
  2. Step 2: Convert to fraction form
    128,262.26/176,887.32 = 80,520.06/x
  3. Step 3: Cross multiply
    128,262.26x = 176,887.32 × 80,520.06
  4. Step 4: Simplify right side
    128,262.26x = 14,242,977,619.64
  5. Step 5: Solve for x
    x = 14,242,977,619.64/128,262.26
  6. Step 6: Final answer
    x = 111,045.74

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1.5x scale

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.