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Finding the Fourth Proportional to 174,106.80, 261,208.80 and 85,363.20

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Solution

The fourth proportional to 174,106.80, 261,208.80 and 85,363.20 is: 128,068.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,106.80 : 261,208.80 = 85,363.20 : x
  2. Step 2: Convert to fraction form
    174,106.80/261,208.80 = 85,363.20/x
  3. Step 3: Cross multiply
    174,106.80x = 261,208.80 × 85,363.20
  4. Step 4: Simplify right side
    174,106.80x = 22,297,619,036.16
  5. Step 5: Solve for x
    x = 22,297,619,036.16/174,106.80
  6. Step 6: Final answer
    x = 128,068.63

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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.