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Finding the Fourth Proportional to 109,897.80, 164,889.90 and 43,326.60

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Solution

The fourth proportional to 109,897.80, 164,889.90 and 43,326.60 is: 65,006.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,897.80 : 164,889.90 = 43,326.60 : x
  2. Step 2: Convert to fraction form
    109,897.80/164,889.90 = 43,326.60/x
  3. Step 3: Cross multiply
    109,897.80x = 164,889.90 × 43,326.60
  4. Step 4: Simplify right side
    109,897.80x = 7,144,118,741.34
  5. Step 5: Solve for x
    x = 7,144,118,741.34/109,897.80
  6. Step 6: Final answer
    x = 65,006.93

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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.