Home / 105,618.21-145,753.14-63,186.75

Finding the Fourth Proportional to 105,618.21, 145,753.14 and 63,186.75

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Solution

The fourth proportional to 105,618.21, 145,753.14 and 63,186.75 is: 87,197.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,618.21 : 145,753.14 = 63,186.75 : x
  2. Step 2: Convert to fraction form
    105,618.21/145,753.14 = 63,186.75/x
  3. Step 3: Cross multiply
    105,618.21x = 145,753.14 × 63,186.75
  4. Step 4: Simplify right side
    105,618.21x = 9,209,667,218.90
  5. Step 5: Solve for x
    x = 9,209,667,218.90/105,618.21
  6. Step 6: Final answer
    x = 87,197.72

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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.