Home / 112,208.90-154,868.30-66,889.77

Finding the Fourth Proportional to 112,208.90, 154,868.30 and 66,889.77

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Solution

The fourth proportional to 112,208.90, 154,868.30 and 66,889.77 is: 92,319.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,208.90 : 154,868.30 = 66,889.77 : x
  2. Step 2: Convert to fraction form
    112,208.90/154,868.30 = 66,889.77/x
  3. Step 3: Cross multiply
    112,208.90x = 154,868.30 × 66,889.77
  4. Step 4: Simplify right side
    112,208.90x = 10,359,105,985.88
  5. Step 5: Solve for x
    x = 10,359,105,985.88/112,208.90
  6. Step 6: Final answer
    x = 92,319.83

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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.