Home / 105,184.08-145,165.44-64,896.78

Finding the Fourth Proportional to 105,184.08, 145,165.44 and 64,896.78

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Solution

The fourth proportional to 105,184.08, 145,165.44 and 64,896.78 is: 89,564.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,184.08 : 145,165.44 = 64,896.78 : x
  2. Step 2: Convert to fraction form
    105,184.08/145,165.44 = 64,896.78/x
  3. Step 3: Cross multiply
    105,184.08x = 145,165.44 × 64,896.78
  4. Step 4: Simplify right side
    105,184.08x = 9,420,769,623.28
  5. Step 5: Solve for x
    x = 9,420,769,623.28/105,184.08
  6. Step 6: Final answer
    x = 89,564.60

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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.