Home / 105,695.42-145,864.19-63,245.75

Finding the Fourth Proportional to 105,695.42, 145,864.19 and 63,245.75

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Solution

The fourth proportional to 105,695.42, 145,864.19 and 63,245.75 is: 87,281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,695.42 : 145,864.19 = 63,245.75 : x
  2. Step 2: Convert to fraction form
    105,695.42/145,864.19 = 63,245.75/x
  3. Step 3: Cross multiply
    105,695.42x = 145,864.19 × 63,245.75
  4. Step 4: Simplify right side
    105,695.42x = 9,225,289,523.49
  5. Step 5: Solve for x
    x = 9,225,289,523.49/105,695.42
  6. Step 6: Final answer
    x = 87,281.83

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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.