Home / 128,305.44-177,058.40-70,943.27

Finding the Fourth Proportional to 128,305.44, 177,058.40 and 70,943.27

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Solution

The fourth proportional to 128,305.44, 177,058.40 and 70,943.27 is: 97,899.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,305.44 : 177,058.40 = 70,943.27 : x
  2. Step 2: Convert to fraction form
    128,305.44/177,058.40 = 70,943.27/x
  3. Step 3: Cross multiply
    128,305.44x = 177,058.40 × 70,943.27
  4. Step 4: Simplify right side
    128,305.44x = 12,561,100,636.96
  5. Step 5: Solve for x
    x = 12,561,100,636.96/128,305.44
  6. Step 6: Final answer
    x = 97,899.98

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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.