Home / 137,178.57-189,302.07-76,750.29

Finding the Fourth Proportional to 137,178.57, 189,302.07 and 76,750.29

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Solution

The fourth proportional to 137,178.57, 189,302.07 and 76,750.29 is: 105,912.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,178.57 : 189,302.07 = 76,750.29 : x
  2. Step 2: Convert to fraction form
    137,178.57/189,302.07 = 76,750.29/x
  3. Step 3: Cross multiply
    137,178.57x = 189,302.07 × 76,750.29
  4. Step 4: Simplify right side
    137,178.57x = 14,528,988,770.10
  5. Step 5: Solve for x
    x = 14,528,988,770.10/137,178.57
  6. Step 6: Final answer
    x = 105,912.96

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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.