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Finding the Fourth Proportional to 99,611.60, 137,465.16 and 54,899.60

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Solution

The fourth proportional to 99,611.60, 137,465.16 and 54,899.60 is: 75,762.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,611.60 : 137,465.16 = 54,899.60 : x
  2. Step 2: Convert to fraction form
    99,611.60/137,465.16 = 54,899.60/x
  3. Step 3: Cross multiply
    99,611.60x = 137,465.16 × 54,899.60
  4. Step 4: Simplify right side
    99,611.60x = 7,546,782,297.94
  5. Step 5: Solve for x
    x = 7,546,782,297.94/99,611.60
  6. Step 6: Final answer
    x = 75,762.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.