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Finding the Fourth Proportional to 127,521.80, 191,282.70 and 80,827.40

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Solution

The fourth proportional to 127,521.80, 191,282.70 and 80,827.40 is: 121,241.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,521.80 : 191,282.70 = 80,827.40 : x
  2. Step 2: Convert to fraction form
    127,521.80/191,282.70 = 80,827.40/x
  3. Step 3: Cross multiply
    127,521.80x = 191,282.70 × 80,827.40
  4. Step 4: Simplify right side
    127,521.80x = 15,460,883,305.98
  5. Step 5: Solve for x
    x = 15,460,883,305.98/127,521.80
  6. Step 6: Final answer
    x = 121,241.10

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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.