Home / 108,145,483.87-149,438,732.86-78,725,740.49

Finding the Fourth Proportional to 108,145,483.87, 149,438,732.86 and 78,725,740.49

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Solution

The fourth proportional to 108,145,483.87, 149,438,732.86 and 78,725,740.49 is: 108,785,632.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,145,483.87 : 149,438,732.86 = 78,725,740.49 : x
  2. Step 2: Convert to fraction form
    108,145,483.87/149,438,732.86 = 78,725,740.49/x
  3. Step 3: Cross multiply
    108,145,483.87x = 149,438,732.86 × 78,725,740.49
  4. Step 4: Simplify right side
    108,145,483.87x = 11,764,674,901,642,010
  5. Step 5: Solve for x
    x = 11,764,674,901,642,010/108,145,483.87
  6. Step 6: Final answer
    x = 108,785,632.84

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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.