Home / 145,587.36-200,905.92-81,928.56

Finding the Fourth Proportional to 145,587.36, 200,905.92 and 81,928.56

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Solution

The fourth proportional to 145,587.36, 200,905.92 and 81,928.56 is: 113,058.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,587.36 : 200,905.92 = 81,928.56 : x
  2. Step 2: Convert to fraction form
    145,587.36/200,905.92 = 81,928.56/x
  3. Step 3: Cross multiply
    145,587.36x = 200,905.92 × 81,928.56
  4. Step 4: Simplify right side
    145,587.36x = 16,459,932,721.08
  5. Step 5: Solve for x
    x = 16,459,932,721.08/145,587.36
  6. Step 6: Final answer
    x = 113,058.80

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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.