Home / 99,652,066.20-149,478,099.30-90,086,128.20

Finding the Fourth Proportional to 99,652,066.20, 149,478,099.30 and 90,086,128.20

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Solution

The fourth proportional to 99,652,066.20, 149,478,099.30 and 90,086,128.20 is: 135,129,192.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,652,066.20 : 149,478,099.30 = 90,086,128.20 : x
  2. Step 2: Convert to fraction form
    99,652,066.20/149,478,099.30 = 90,086,128.20/x
  3. Step 3: Cross multiply
    99,652,066.20x = 149,478,099.30 × 90,086,128.20
  4. Step 4: Simplify right side
    99,652,066.20x = 13,465,903,216,632,132
  5. Step 5: Solve for x
    x = 13,465,903,216,632,132/99,652,066.20
  6. Step 6: Final answer
    x = 135,129,192.30

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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.