Home / 145,485.82-200,768.52-81,823.60

Finding the Fourth Proportional to 145,485.82, 200,768.52 and 81,823.60

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Solution

The fourth proportional to 145,485.82, 200,768.52 and 81,823.60 is: 112,915.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,485.82 : 200,768.52 = 81,823.60 : x
  2. Step 2: Convert to fraction form
    145,485.82/200,768.52 = 81,823.60/x
  3. Step 3: Cross multiply
    145,485.82x = 200,768.52 × 81,823.60
  4. Step 4: Simplify right side
    145,485.82x = 16,427,603,073.07
  5. Step 5: Solve for x
    x = 16,427,603,073.07/145,485.82
  6. Step 6: Final answer
    x = 112,915.49

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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.