Home / 145,235,771.70-200,419,530-79,154,852.28

Finding the Fourth Proportional to 145,235,771.70, 200,419,530 and 79,154,852.28

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Solution

The fourth proportional to 145,235,771.70, 200,419,530 and 79,154,852.28 is: 109,230,516.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,235,771.70 : 200,419,530 = 79,154,852.28 : x
  2. Step 2: Convert to fraction form
    145,235,771.70/200,419,530 = 79,154,852.28/x
  3. Step 3: Cross multiply
    145,235,771.70x = 200,419,530 × 79,154,852.28
  4. Step 4: Simplify right side
    145,235,771.70x = 15,864,178,291,177,028
  5. Step 5: Solve for x
    x = 15,864,178,291,177,028/145,235,771.70
  6. Step 6: Final answer
    x = 109,230,516.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.