Home / 111,756.12-154,220.40-61,455.12

Finding the Fourth Proportional to 111,756.12, 154,220.40 and 61,455.12

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Solution

The fourth proportional to 111,756.12, 154,220.40 and 61,455.12 is: 84,806.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,756.12 : 154,220.40 = 61,455.12 : x
  2. Step 2: Convert to fraction form
    111,756.12/154,220.40 = 61,455.12/x
  3. Step 3: Cross multiply
    111,756.12x = 154,220.40 × 61,455.12
  4. Step 4: Simplify right side
    111,756.12x = 9,477,633,188.45
  5. Step 5: Solve for x
    x = 9,477,633,188.45/111,756.12
  6. Step 6: Final answer
    x = 84,806.39

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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.