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Finding the Fourth Proportional to 174,897.80, 262,044.30 and 81,211.40

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Solution

The fourth proportional to 174,897.80, 262,044.30 and 81,211.40 is: 121,676.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,897.80 : 262,044.30 = 81,211.40 : x
  2. Step 2: Convert to fraction form
    174,897.80/262,044.30 = 81,211.40/x
  3. Step 3: Cross multiply
    174,897.80x = 262,044.30 × 81,211.40
  4. Step 4: Simplify right side
    174,897.80x = 21,280,984,465.02
  5. Step 5: Solve for x
    x = 21,280,984,465.02/174,897.80
  6. Step 6: Final answer
    x = 121,676.68

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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.