Home / 128,273.76-176,997.96-71,674.20

Finding the Fourth Proportional to 128,273.76, 176,997.96 and 71,674.20

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Solution

The fourth proportional to 128,273.76, 176,997.96 and 71,674.20 is: 98,899.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,273.76 : 176,997.96 = 71,674.20 : x
  2. Step 2: Convert to fraction form
    128,273.76/176,997.96 = 71,674.20/x
  3. Step 3: Cross multiply
    128,273.76x = 176,997.96 × 71,674.20
  4. Step 4: Simplify right side
    128,273.76x = 12,686,187,184.63
  5. Step 5: Solve for x
    x = 12,686,187,184.63/128,273.76
  6. Step 6: Final answer
    x = 98,899.32

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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.