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Finding the Fourth Proportional to 108,495.10, 149,623.32 and 74,443.51

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Solution

The fourth proportional to 108,495.10, 149,623.32 and 74,443.51 is: 102,663.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,495.10 : 149,623.32 = 74,443.51 : x
  2. Step 2: Convert to fraction form
    108,495.10/149,623.32 = 74,443.51/x
  3. Step 3: Cross multiply
    108,495.10x = 149,623.32 × 74,443.51
  4. Step 4: Simplify right side
    108,495.10x = 11,138,485,118.65
  5. Step 5: Solve for x
    x = 11,138,485,118.65/108,495.10
  6. Step 6: Final answer
    x = 102,663.49

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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.