Home / 137,178.03-189,313.04-76,745.07

Finding the Fourth Proportional to 137,178.03, 189,313.04 and 76,745.07

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Solution

The fourth proportional to 137,178.03, 189,313.04 and 76,745.07 is: 105,912.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,178.03 : 189,313.04 = 76,745.07 : x
  2. Step 2: Convert to fraction form
    137,178.03/189,313.04 = 76,745.07/x
  3. Step 3: Cross multiply
    137,178.03x = 189,313.04 × 76,745.07
  4. Step 4: Simplify right side
    137,178.03x = 14,528,842,506.71
  5. Step 5: Solve for x
    x = 14,528,842,506.71/137,178.03
  6. Step 6: Final answer
    x = 105,912.31

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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.