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Finding the Fourth Proportional to 113,887.40, 170,831.10 and 82,394.60

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Solution

The fourth proportional to 113,887.40, 170,831.10 and 82,394.60 is: 123,591.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,887.40 : 170,831.10 = 82,394.60 : x
  2. Step 2: Convert to fraction form
    113,887.40/170,831.10 = 82,394.60/x
  3. Step 3: Cross multiply
    113,887.40x = 170,831.10 × 82,394.60
  4. Step 4: Simplify right side
    113,887.40x = 14,075,560,152.06
  5. Step 5: Solve for x
    x = 14,075,560,152.06/113,887.40
  6. Step 6: Final answer
    x = 123,591.90

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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.