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Finding the Fourth Proportional to 113,470.70, 170,000.73 and 81,708.80

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Solution

The fourth proportional to 113,470.70, 170,000.73 and 81,708.80 is: 122,415.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,470.70 : 170,000.73 = 81,708.80 : x
  2. Step 2: Convert to fraction form
    113,470.70/170,000.73 = 81,708.80/x
  3. Step 3: Cross multiply
    113,470.70x = 170,000.73 × 81,708.80
  4. Step 4: Simplify right side
    113,470.70x = 13,890,555,647.42
  5. Step 5: Solve for x
    x = 13,890,555,647.42/113,470.70
  6. Step 6: Final answer
    x = 122,415.35

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1.5x scale

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.