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Finding the Fourth Proportional to 85,116.81, 127,675.08 and 84,993.69

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Solution

The fourth proportional to 85,116.81, 127,675.08 and 84,993.69 is: 127,490.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,116.81 : 127,675.08 = 84,993.69 : x
  2. Step 2: Convert to fraction form
    85,116.81/127,675.08 = 84,993.69/x
  3. Step 3: Cross multiply
    85,116.81x = 127,675.08 × 84,993.69
  4. Step 4: Simplify right side
    85,116.81x = 10,851,576,170.25
  5. Step 5: Solve for x
    x = 10,851,576,170.25/85,116.81
  6. Step 6: Final answer
    x = 127,490.40

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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.