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Finding the Fourth Proportional to 103,575.56, 155,478.62 and 53,642.30

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Solution

The fourth proportional to 103,575.56, 155,478.62 and 53,642.30 is: 80,523.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,575.56 : 155,478.62 = 53,642.30 : x
  2. Step 2: Convert to fraction form
    103,575.56/155,478.62 = 53,642.30/x
  3. Step 3: Cross multiply
    103,575.56x = 155,478.62 × 53,642.30
  4. Step 4: Simplify right side
    103,575.56x = 8,340,230,134.34
  5. Step 5: Solve for x
    x = 8,340,230,134.34/103,575.56
  6. Step 6: Final answer
    x = 80,523.15

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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.