Home / 103,078.63-154,636.40-53,145.32

Finding the Fourth Proportional to 103,078.63, 154,636.40 and 53,145.32

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Solution

The fourth proportional to 103,078.63, 154,636.40 and 53,145.32 is: 79,727.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,078.63 : 154,636.40 = 53,145.32 : x
  2. Step 2: Convert to fraction form
    103,078.63/154,636.40 = 53,145.32/x
  3. Step 3: Cross multiply
    103,078.63x = 154,636.40 × 53,145.32
  4. Step 4: Simplify right side
    103,078.63x = 8,218,200,695.92
  5. Step 5: Solve for x
    x = 8,218,200,695.92/103,078.63
  6. Step 6: Final answer
    x = 79,727.50

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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.