Home / 137,153.21-189,291.60-83,427.80

Finding the Fourth Proportional to 137,153.21, 189,291.60 and 83,427.80

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Solution

The fourth proportional to 137,153.21, 189,291.60 and 83,427.80 is: 115,142.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,153.21 : 189,291.60 = 83,427.80 : x
  2. Step 2: Convert to fraction form
    137,153.21/189,291.60 = 83,427.80/x
  3. Step 3: Cross multiply
    137,153.21x = 189,291.60 × 83,427.80
  4. Step 4: Simplify right side
    137,153.21x = 15,792,180,800.02
  5. Step 5: Solve for x
    x = 15,792,180,800.02/137,153.21
  6. Step 6: Final answer
    x = 115,142.63

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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.