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Finding the Fourth Proportional to 113,465.70, 169,993.23 and 81,703.80

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Solution

The fourth proportional to 113,465.70, 169,993.23 and 81,703.80 is: 122,407.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,465.70 : 169,993.23 = 81,703.80 : x
  2. Step 2: Convert to fraction form
    113,465.70/169,993.23 = 81,703.80/x
  3. Step 3: Cross multiply
    113,465.70x = 169,993.23 × 81,703.80
  4. Step 4: Simplify right side
    113,465.70x = 13,889,092,865.27
  5. Step 5: Solve for x
    x = 13,889,092,865.27/113,465.70
  6. Step 6: Final answer
    x = 122,407.85

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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.