Home / 100,100,921.80-150,151,382.70-80,617,376.20

Finding the Fourth Proportional to 100,100,921.80, 150,151,382.70 and 80,617,376.20

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Solution

The fourth proportional to 100,100,921.80, 150,151,382.70 and 80,617,376.20 is: 120,926,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,100,921.80 : 150,151,382.70 = 80,617,376.20 : x
  2. Step 2: Convert to fraction form
    100,100,921.80/150,151,382.70 = 80,617,376.20/x
  3. Step 3: Cross multiply
    100,100,921.80x = 150,151,382.70 × 80,617,376.20
  4. Step 4: Simplify right side
    100,100,921.80x = 12,104,810,506,076,072
  5. Step 5: Solve for x
    x = 12,104,810,506,076,072/100,100,921.80
  6. Step 6: Final answer
    x = 120,926,064.30

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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.