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Finding the Fourth Proportional to 92,378.40, 138,220.92 and 54,800.88

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Solution

The fourth proportional to 92,378.40, 138,220.92 and 54,800.88 is: 81,995.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,378.40 : 138,220.92 = 54,800.88 : x
  2. Step 2: Convert to fraction form
    92,378.40/138,220.92 = 54,800.88/x
  3. Step 3: Cross multiply
    92,378.40x = 138,220.92 × 54,800.88
  4. Step 4: Simplify right side
    92,378.40x = 7,574,628,050.41
  5. Step 5: Solve for x
    x = 7,574,628,050.41/92,378.40
  6. Step 6: Final answer
    x = 81,995.66

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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.