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Finding the Fourth Proportional to 85,141.98, 127,603.26 and 79,827.48

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Solution

The fourth proportional to 85,141.98, 127,603.26 and 79,827.48 is: 119,638.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,141.98 : 127,603.26 = 79,827.48 : x
  2. Step 2: Convert to fraction form
    85,141.98/127,603.26 = 79,827.48/x
  3. Step 3: Cross multiply
    85,141.98x = 127,603.26 × 79,827.48
  4. Step 4: Simplify right side
    85,141.98x = 10,186,246,685.58
  5. Step 5: Solve for x
    x = 10,186,246,685.58/85,141.98
  6. Step 6: Final answer
    x = 119,638.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.