Home / 100,508,738.60-150,763,107.90-90,305,071.40

Finding the Fourth Proportional to 100,508,738.60, 150,763,107.90 and 90,305,071.40

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Solution

The fourth proportional to 100,508,738.60, 150,763,107.90 and 90,305,071.40 is: 135,457,607.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,508,738.60 : 150,763,107.90 = 90,305,071.40 : x
  2. Step 2: Convert to fraction form
    100,508,738.60/150,763,107.90 = 90,305,071.40/x
  3. Step 3: Cross multiply
    100,508,738.60x = 150,763,107.90 × 90,305,071.40
  4. Step 4: Simplify right side
    100,508,738.60x = 13,614,673,223,395,406
  5. Step 5: Solve for x
    x = 13,614,673,223,395,406/100,508,738.60
  6. Step 6: Final answer
    x = 135,457,607.10

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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.