Home / 108,145,513.67-149,438,774.07-78,725,770.34

Finding the Fourth Proportional to 108,145,513.67, 149,438,774.07 and 78,725,770.34

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Solution

The fourth proportional to 108,145,513.67, 149,438,774.07 and 78,725,770.34 is: 108,785,674.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,145,513.67 : 149,438,774.07 = 78,725,770.34 : x
  2. Step 2: Convert to fraction form
    108,145,513.67/149,438,774.07 = 78,725,770.34/x
  3. Step 3: Cross multiply
    108,145,513.67x = 149,438,774.07 × 78,725,770.34
  4. Step 4: Simplify right side
    108,145,513.67x = 11,764,682,606,578,772
  5. Step 5: Solve for x
    x = 11,764,682,606,578,772/108,145,513.67
  6. Step 6: Final answer
    x = 108,785,674.12

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1.5x scale

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.