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Finding the Fourth Proportional to 189,021.68, 283,443.60 and 70,661.60

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Solution

The fourth proportional to 189,021.68, 283,443.60 and 70,661.60 is: 105,959.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,021.68 : 283,443.60 = 70,661.60 : x
  2. Step 2: Convert to fraction form
    189,021.68/283,443.60 = 70,661.60/x
  3. Step 3: Cross multiply
    189,021.68x = 283,443.60 × 70,661.60
  4. Step 4: Simplify right side
    189,021.68x = 20,028,578,285.76
  5. Step 5: Solve for x
    x = 20,028,578,285.76/189,021.68
  6. Step 6: Final answer
    x = 105,959.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.