Home / 112,200.12-154,835.10-61,898.76

Finding the Fourth Proportional to 112,200.12, 154,835.10 and 61,898.76

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Solution

The fourth proportional to 112,200.12, 154,835.10 and 61,898.76 is: 85,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,200.12 : 154,835.10 = 61,898.76 : x
  2. Step 2: Convert to fraction form
    112,200.12/154,835.10 = 61,898.76/x
  3. Step 3: Cross multiply
    112,200.12x = 154,835.10 × 61,898.76
  4. Step 4: Simplify right side
    112,200.12x = 9,584,100,694.48
  5. Step 5: Solve for x
    x = 9,584,100,694.48/112,200.12
  6. Step 6: Final answer
    x = 85,419.70

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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.