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Finding the Fourth Proportional to 121,525.65, 167,715.47 and 67,082.76

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Solution

The fourth proportional to 121,525.65, 167,715.47 and 67,082.76 is: 92,579.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,525.65 : 167,715.47 = 67,082.76 : x
  2. Step 2: Convert to fraction form
    121,525.65/167,715.47 = 67,082.76/x
  3. Step 3: Cross multiply
    121,525.65x = 167,715.47 × 67,082.76
  4. Step 4: Simplify right side
    121,525.65x = 11,250,816,790.00
  5. Step 5: Solve for x
    x = 11,250,816,790.00/121,525.65
  6. Step 6: Final answer
    x = 92,579.77

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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.