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Finding the Fourth Proportional to 100,003.60, 150,005.40 and 89,117.20

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Solution

The fourth proportional to 100,003.60, 150,005.40 and 89,117.20 is: 133,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,003.60 : 150,005.40 = 89,117.20 : x
  2. Step 2: Convert to fraction form
    100,003.60/150,005.40 = 89,117.20/x
  3. Step 3: Cross multiply
    100,003.60x = 150,005.40 × 89,117.20
  4. Step 4: Simplify right side
    100,003.60x = 13,368,061,232.88
  5. Step 5: Solve for x
    x = 13,368,061,232.88/100,003.60
  6. Step 6: Final answer
    x = 133,675.80

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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.