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Finding the Fourth Proportional to 108,255.69, 149,412.09 and 79,616.93

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Solution

The fourth proportional to 108,255.69, 149,412.09 and 79,616.93 is: 109,885.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,255.69 : 149,412.09 = 79,616.93 : x
  2. Step 2: Convert to fraction form
    108,255.69/149,412.09 = 79,616.93/x
  3. Step 3: Cross multiply
    108,255.69x = 149,412.09 × 79,616.93
  4. Step 4: Simplify right side
    108,255.69x = 11,895,731,462.19
  5. Step 5: Solve for x
    x = 11,895,731,462.19/108,255.69
  6. Step 6: Final answer
    x = 109,885.51

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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.