Home / 189,915.36-262,088.64-105,040.32

Finding the Fourth Proportional to 189,915.36, 262,088.64 and 105,040.32

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Solution

The fourth proportional to 189,915.36, 262,088.64 and 105,040.32 is: 144,958.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,915.36 : 262,088.64 = 105,040.32 : x
  2. Step 2: Convert to fraction form
    189,915.36/262,088.64 = 105,040.32/x
  3. Step 3: Cross multiply
    189,915.36x = 262,088.64 × 105,040.32
  4. Step 4: Simplify right side
    189,915.36x = 27,529,874,613.96
  5. Step 5: Solve for x
    x = 27,529,874,613.96/189,915.36
  6. Step 6: Final answer
    x = 144,958.65

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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.