Home / 111,739.20-154,200.07-61,438.20

Finding the Fourth Proportional to 111,739.20, 154,200.07 and 61,438.20

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Solution

The fourth proportional to 111,739.20, 154,200.07 and 61,438.20 is: 84,784.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,739.20 : 154,200.07 = 61,438.20 : x
  2. Step 2: Convert to fraction form
    111,739.20/154,200.07 = 61,438.20/x
  3. Step 3: Cross multiply
    111,739.20x = 154,200.07 × 61,438.20
  4. Step 4: Simplify right side
    111,739.20x = 9,473,774,740.67
  5. Step 5: Solve for x
    x = 9,473,774,740.67/111,739.20
  6. Step 6: Final answer
    x = 84,784.70

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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.