Home / 137,272.28-189,504.54-86,313.05

Finding the Fourth Proportional to 137,272.28, 189,504.54 and 86,313.05

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Solution

The fourth proportional to 137,272.28, 189,504.54 and 86,313.05 is: 119,155.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,272.28 : 189,504.54 = 86,313.05 : x
  2. Step 2: Convert to fraction form
    137,272.28/189,504.54 = 86,313.05/x
  3. Step 3: Cross multiply
    137,272.28x = 189,504.54 × 86,313.05
  4. Step 4: Simplify right side
    137,272.28x = 16,356,713,888.72
  5. Step 5: Solve for x
    x = 16,356,713,888.72/137,272.28
  6. Step 6: Final answer
    x = 119,155.26

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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.