Home / 128,093.40-176,761.56-71,508.36

Finding the Fourth Proportional to 128,093.40, 176,761.56 and 71,508.36

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Solution

The fourth proportional to 128,093.40, 176,761.56 and 71,508.36 is: 98,677.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,093.40 : 176,761.56 = 71,508.36 : x
  2. Step 2: Convert to fraction form
    128,093.40/176,761.56 = 71,508.36/x
  3. Step 3: Cross multiply
    128,093.40x = 176,761.56 × 71,508.36
  4. Step 4: Simplify right side
    128,093.40x = 12,639,929,266.64
  5. Step 5: Solve for x
    x = 12,639,929,266.64/128,093.40
  6. Step 6: Final answer
    x = 98,677.44

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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.