Home / 111,332.34-166,387.24-81,409.60

Finding the Fourth Proportional to 111,332.34, 166,387.24 and 81,409.60

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Solution

The fourth proportional to 111,332.34, 166,387.24 and 81,409.60 is: 121,667.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,332.34 : 166,387.24 = 81,409.60 : x
  2. Step 2: Convert to fraction form
    111,332.34/166,387.24 = 81,409.60/x
  3. Step 3: Cross multiply
    111,332.34x = 166,387.24 × 81,409.60
  4. Step 4: Simplify right side
    111,332.34x = 13,545,518,653.50
  5. Step 5: Solve for x
    x = 13,545,518,653.50/111,332.34
  6. Step 6: Final answer
    x = 121,667.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.