Home / 100,140.74-150,157.23-40,139.10

Finding the Fourth Proportional to 100,140.74, 150,157.23 and 40,139.10

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Solution

The fourth proportional to 100,140.74, 150,157.23 and 40,139.10 is: 60,187.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,140.74 : 150,157.23 = 40,139.10 : x
  2. Step 2: Convert to fraction form
    100,140.74/150,157.23 = 40,139.10/x
  3. Step 3: Cross multiply
    100,140.74x = 150,157.23 × 40,139.10
  4. Step 4: Simplify right side
    100,140.74x = 6,027,176,070.69
  5. Step 5: Solve for x
    x = 6,027,176,070.69/100,140.74
  6. Step 6: Final answer
    x = 60,187.05

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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.