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Finding the Fourth Proportional to 174,698.70, 262,048.05 and 81,386.70

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Solution

The fourth proportional to 174,698.70, 262,048.05 and 81,386.70 is: 122,080.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,698.70 : 262,048.05 = 81,386.70 : x
  2. Step 2: Convert to fraction form
    174,698.70/262,048.05 = 81,386.70/x
  3. Step 3: Cross multiply
    174,698.70x = 262,048.05 × 81,386.70
  4. Step 4: Simplify right side
    174,698.70x = 21,327,226,030.94
  5. Step 5: Solve for x
    x = 21,327,226,030.94/174,698.70
  6. Step 6: Final answer
    x = 122,080.05

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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.