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Finding the Fourth Proportional to 157,611.64, 236,041.62 and 87,316.60

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Solution

The fourth proportional to 157,611.64, 236,041.62 and 87,316.60 is: 130,766.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,611.64 : 236,041.62 = 87,316.60 : x
  2. Step 2: Convert to fraction form
    157,611.64/236,041.62 = 87,316.60/x
  3. Step 3: Cross multiply
    157,611.64x = 236,041.62 × 87,316.60
  4. Step 4: Simplify right side
    157,611.64x = 20,610,351,716.89
  5. Step 5: Solve for x
    x = 20,610,351,716.89/157,611.64
  6. Step 6: Final answer
    x = 130,766.69

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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.