Home / 100,139.24-150,154.98-40,137.60

Finding the Fourth Proportional to 100,139.24, 150,154.98 and 40,137.60

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Solution

The fourth proportional to 100,139.24, 150,154.98 and 40,137.60 is: 60,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,139.24 : 150,154.98 = 40,137.60 : x
  2. Step 2: Convert to fraction form
    100,139.24/150,154.98 = 40,137.60/x
  3. Step 3: Cross multiply
    100,139.24x = 150,154.98 × 40,137.60
  4. Step 4: Simplify right side
    100,139.24x = 6,026,860,525.25
  5. Step 5: Solve for x
    x = 6,026,860,525.25/100,139.24
  6. Step 6: Final answer
    x = 60,184.80

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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.