Home / 103,864.40-155,845.20-54,000.80

Finding the Fourth Proportional to 103,864.40, 155,845.20 and 54,000.80

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Solution

The fourth proportional to 103,864.40, 155,845.20 and 54,000.80 is: 81,026.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,864.40 : 155,845.20 = 54,000.80 : x
  2. Step 2: Convert to fraction form
    103,864.40/155,845.20 = 54,000.80/x
  3. Step 3: Cross multiply
    103,864.40x = 155,845.20 × 54,000.80
  4. Step 4: Simplify right side
    103,864.40x = 8,415,765,476.16
  5. Step 5: Solve for x
    x = 8,415,765,476.16/103,864.40
  6. Step 6: Final answer
    x = 81,026.47

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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.