Home / 142,293.88-196,398.30-81,899.40

Finding the Fourth Proportional to 142,293.88, 196,398.30 and 81,899.40

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Solution

The fourth proportional to 142,293.88, 196,398.30 and 81,899.40 is: 113,040.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,293.88 : 196,398.30 = 81,899.40 : x
  2. Step 2: Convert to fraction form
    142,293.88/196,398.30 = 81,899.40/x
  3. Step 3: Cross multiply
    142,293.88x = 196,398.30 × 81,899.40
  4. Step 4: Simplify right side
    142,293.88x = 16,084,902,931.02
  5. Step 5: Solve for x
    x = 16,084,902,931.02/142,293.88
  6. Step 6: Final answer
    x = 113,040.02

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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.