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Finding the Fourth Proportional to 150,511.77, 207,707.85 and 85,989.60

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Solution

The fourth proportional to 150,511.77, 207,707.85 and 85,989.60 is: 118,666.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,511.77 : 207,707.85 = 85,989.60 : x
  2. Step 2: Convert to fraction form
    150,511.77/207,707.85 = 85,989.60/x
  3. Step 3: Cross multiply
    150,511.77x = 207,707.85 × 85,989.60
  4. Step 4: Simplify right side
    150,511.77x = 17,860,714,938.36
  5. Step 5: Solve for x
    x = 17,860,714,938.36/150,511.77
  6. Step 6: Final answer
    x = 118,666.57

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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.