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Finding the Fourth Proportional to 108,495.45, 161,929.80 and 101,409.57

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Solution

The fourth proportional to 108,495.45, 161,929.80 and 101,409.57 is: 151,354.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,495.45 : 161,929.80 = 101,409.57 : x
  2. Step 2: Convert to fraction form
    108,495.45/161,929.80 = 101,409.57/x
  3. Step 3: Cross multiply
    108,495.45x = 161,929.80 × 101,409.57
  4. Step 4: Simplify right side
    108,495.45x = 16,421,231,388.19
  5. Step 5: Solve for x
    x = 16,421,231,388.19/108,495.45
  6. Step 6: Final answer
    x = 151,354.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.