Home / 108,666.79-149,895.39-79,579.69

Finding the Fourth Proportional to 108,666.79, 149,895.39 and 79,579.69

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Solution

The fourth proportional to 108,666.79, 149,895.39 and 79,579.69 is: 109,772.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,666.79 : 149,895.39 = 79,579.69 : x
  2. Step 2: Convert to fraction form
    108,666.79/149,895.39 = 79,579.69/x
  3. Step 3: Cross multiply
    108,666.79x = 149,895.39 × 79,579.69
  4. Step 4: Simplify right side
    108,666.79x = 11,928,628,668.63
  5. Step 5: Solve for x
    x = 11,928,628,668.63/108,666.79
  6. Step 6: Final answer
    x = 109,772.53

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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.