Home / 128,260.91-176,999.77-71,672.29

Finding the Fourth Proportional to 128,260.91, 176,999.77 and 71,672.29

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Solution

The fourth proportional to 128,260.91, 176,999.77 and 71,672.29 is: 98,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,260.91 : 176,999.77 = 71,672.29 : x
  2. Step 2: Convert to fraction form
    128,260.91/176,999.77 = 71,672.29/x
  3. Step 3: Cross multiply
    128,260.91x = 176,999.77 × 71,672.29
  4. Step 4: Simplify right side
    128,260.91x = 12,685,978,845.37
  5. Step 5: Solve for x
    x = 12,685,978,845.37/128,260.91
  6. Step 6: Final answer
    x = 98,907.60

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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.