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Finding the Fourth Proportional to 108,498.48, 149,628 and 74,446.89

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Solution

The fourth proportional to 108,498.48, 149,628 and 74,446.89 is: 102,668.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,498.48 : 149,628 = 74,446.89 : x
  2. Step 2: Convert to fraction form
    108,498.48/149,628 = 74,446.89/x
  3. Step 3: Cross multiply
    108,498.48x = 149,628 × 74,446.89
  4. Step 4: Simplify right side
    108,498.48x = 11,139,339,256.92
  5. Step 5: Solve for x
    x = 11,139,339,256.92/108,498.48
  6. Step 6: Final answer
    x = 102,668.16

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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.