Home / 142,297.48-196,378.08-81,877.30

Finding the Fourth Proportional to 142,297.48, 196,378.08 and 81,877.30

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Solution

The fourth proportional to 142,297.48, 196,378.08 and 81,877.30 is: 112,995.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,297.48 : 196,378.08 = 81,877.30 : x
  2. Step 2: Convert to fraction form
    142,297.48/196,378.08 = 81,877.30/x
  3. Step 3: Cross multiply
    142,297.48x = 196,378.08 × 81,877.30
  4. Step 4: Simplify right side
    142,297.48x = 16,078,906,969.58
  5. Step 5: Solve for x
    x = 16,078,906,969.58/142,297.48
  6. Step 6: Final answer
    x = 112,995.02

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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.