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Finding the Fourth Proportional to 103,638.76, 155,459.97 and 37,126.63

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Solution

The fourth proportional to 103,638.76, 155,459.97 and 37,126.63 is: 55,690.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.76 : 155,459.97 = 37,126.63 : x
  2. Step 2: Convert to fraction form
    103,638.76/155,459.97 = 37,126.63/x
  3. Step 3: Cross multiply
    103,638.76x = 155,459.97 × 37,126.63
  4. Step 4: Simplify right side
    103,638.76x = 5,771,704,786.00
  5. Step 5: Solve for x
    x = 5,771,704,786.00/103,638.76
  6. Step 6: Final answer
    x = 55,690.60

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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.