Home / 142,238.36-196,294.90-81,809.02

Finding the Fourth Proportional to 142,238.36, 196,294.90 and 81,809.02

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Solution

The fourth proportional to 142,238.36, 196,294.90 and 81,809.02 is: 112,899.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,238.36 : 196,294.90 = 81,809.02 : x
  2. Step 2: Convert to fraction form
    142,238.36/196,294.90 = 81,809.02/x
  3. Step 3: Cross multiply
    142,238.36x = 196,294.90 × 81,809.02
  4. Step 4: Simplify right side
    142,238.36x = 16,058,693,400.00
  5. Step 5: Solve for x
    x = 16,058,693,400.00/142,238.36
  6. Step 6: Final answer
    x = 112,899.88

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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.