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Finding the Fourth Proportional to 100,165.60, 149,953.15 and 73,987.21

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Solution

The fourth proportional to 100,165.60, 149,953.15 and 73,987.21 is: 110,762.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,165.60 : 149,953.15 = 73,987.21 : x
  2. Step 2: Convert to fraction form
    100,165.60/149,953.15 = 73,987.21/x
  3. Step 3: Cross multiply
    100,165.60x = 149,953.15 × 73,987.21
  4. Step 4: Simplify right side
    100,165.60x = 11,094,615,199.21
  5. Step 5: Solve for x
    x = 11,094,615,199.21/100,165.60
  6. Step 6: Final answer
    x = 110,762.73

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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.