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Finding the Fourth Proportional to 105,885.65, 146,122.41 and 57,487.64

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Solution

The fourth proportional to 105,885.65, 146,122.41 and 57,487.64 is: 79,333.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,885.65 : 146,122.41 = 57,487.64 : x
  2. Step 2: Convert to fraction form
    105,885.65/146,122.41 = 57,487.64/x
  3. Step 3: Cross multiply
    105,885.65x = 146,122.41 × 57,487.64
  4. Step 4: Simplify right side
    105,885.65x = 8,400,231,986.98
  5. Step 5: Solve for x
    x = 8,400,231,986.98/105,885.65
  6. Step 6: Final answer
    x = 79,333.05

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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.