Home / 105,880.32-146,017.28-71,939.60

Finding the Fourth Proportional to 105,880.32, 146,017.28 and 71,939.60

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Solution

The fourth proportional to 105,880.32, 146,017.28 and 71,939.60 is: 99,210.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,880.32 : 146,017.28 = 71,939.60 : x
  2. Step 2: Convert to fraction form
    105,880.32/146,017.28 = 71,939.60/x
  3. Step 3: Cross multiply
    105,880.32x = 146,017.28 × 71,939.60
  4. Step 4: Simplify right side
    105,880.32x = 10,504,424,716.29
  5. Step 5: Solve for x
    x = 10,504,424,716.29/105,880.32
  6. Step 6: Final answer
    x = 99,210.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.