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Finding the Fourth Proportional to 114,485.40, 171,728.10 and 55,436.40

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Solution

The fourth proportional to 114,485.40, 171,728.10 and 55,436.40 is: 83,154.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,485.40 : 171,728.10 = 55,436.40 : x
  2. Step 2: Convert to fraction form
    114,485.40/171,728.10 = 55,436.40/x
  3. Step 3: Cross multiply
    114,485.40x = 171,728.10 × 55,436.40
  4. Step 4: Simplify right side
    114,485.40x = 9,519,987,642.84
  5. Step 5: Solve for x
    x = 9,519,987,642.84/114,485.40
  6. Step 6: Final answer
    x = 83,154.60

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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.