Home / 100,478,711.20-150,718,066.80-99,628,405.60

Finding the Fourth Proportional to 100,478,711.20, 150,718,066.80 and 99,628,405.60

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Solution

The fourth proportional to 100,478,711.20, 150,718,066.80 and 99,628,405.60 is: 149,442,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,478,711.20 : 150,718,066.80 = 99,628,405.60 : x
  2. Step 2: Convert to fraction form
    100,478,711.20/150,718,066.80 = 99,628,405.60/x
  3. Step 3: Cross multiply
    100,478,711.20x = 150,718,066.80 × 99,628,405.60
  4. Step 4: Simplify right side
    100,478,711.20x = 15,015,800,690,398,294
  5. Step 5: Solve for x
    x = 15,015,800,690,398,294/100,478,711.20
  6. Step 6: Final answer
    x = 149,442,608.40

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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.