Home / 112,770.07-168,687.63-85,912.85

Finding the Fourth Proportional to 112,770.07, 168,687.63 and 85,912.85

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Solution

The fourth proportional to 112,770.07, 168,687.63 and 85,912.85 is: 128,513.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,770.07 : 168,687.63 = 85,912.85 : x
  2. Step 2: Convert to fraction form
    112,770.07/168,687.63 = 85,912.85/x
  3. Step 3: Cross multiply
    112,770.07x = 168,687.63 × 85,912.85
  4. Step 4: Simplify right side
    112,770.07x = 14,492,435,474.76
  5. Step 5: Solve for x
    x = 14,492,435,474.76/112,770.07
  6. Step 6: Final answer
    x = 128,513.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.