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Finding the Fourth Proportional to 169,161.84, 253,041.48 and 128,876.00

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Solution

The fourth proportional to 169,161.84, 253,041.48 and 128,876.00 is: 192,779.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,161.84 : 253,041.48 = 128,876.00 : x
  2. Step 2: Convert to fraction form
    169,161.84/253,041.48 = 128,876.00/x
  3. Step 3: Cross multiply
    169,161.84x = 253,041.48 × 128,876.00
  4. Step 4: Simplify right side
    169,161.84x = 32,610,972,511.27
  5. Step 5: Solve for x
    x = 32,610,972,511.27/169,161.84
  6. Step 6: Final answer
    x = 192,779.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.