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Finding the Fourth Proportional to 150,659.04, 207,910.80 and 87,007.68

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Solution

The fourth proportional to 150,659.04, 207,910.80 and 87,007.68 is: 120,071.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,659.04 : 207,910.80 = 87,007.68 : x
  2. Step 2: Convert to fraction form
    150,659.04/207,910.80 = 87,007.68/x
  3. Step 3: Cross multiply
    150,659.04x = 207,910.80 × 87,007.68
  4. Step 4: Simplify right side
    150,659.04x = 18,089,836,354.94
  5. Step 5: Solve for x
    x = 18,089,836,354.94/150,659.04
  6. Step 6: Final answer
    x = 120,071.36

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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.