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Finding the Fourth Proportional to 90,827.30, 127,261.90 and 90,827.30

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Solution

The fourth proportional to 90,827.30, 127,261.90 and 90,827.30 is: 127,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,827.30 : 127,261.90 = 90,827.30 : x
  2. Step 2: Convert to fraction form
    90,827.30/127,261.90 = 90,827.30/x
  3. Step 3: Cross multiply
    90,827.30x = 127,261.90 × 90,827.30
  4. Step 4: Simplify right side
    90,827.30x = 11,558,854,769.87
  5. Step 5: Solve for x
    x = 11,558,854,769.87/90,827.30
  6. Step 6: Final answer
    x = 127,261.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.