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Finding the Fourth Proportional to 141,798, 195,675.12 and 81,326.64

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Solution

The fourth proportional to 141,798, 195,675.12 and 81,326.64 is: 112,227.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,798 : 195,675.12 = 81,326.64 : x
  2. Step 2: Convert to fraction form
    141,798/195,675.12 = 81,326.64/x
  3. Step 3: Cross multiply
    141,798x = 195,675.12 × 81,326.64
  4. Step 4: Simplify right side
    141,798x = 15,913,600,041.20
  5. Step 5: Solve for x
    x = 15,913,600,041.20/141,798
  6. Step 6: Final answer
    x = 112,227.25

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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.