Home / 105,682.12-145,840.10-57,935.45

Finding the Fourth Proportional to 105,682.12, 145,840.10 and 57,935.45

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Solution

The fourth proportional to 105,682.12, 145,840.10 and 57,935.45 is: 79,950.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,682.12 : 145,840.10 = 57,935.45 : x
  2. Step 2: Convert to fraction form
    105,682.12/145,840.10 = 57,935.45/x
  3. Step 3: Cross multiply
    105,682.12x = 145,840.10 × 57,935.45
  4. Step 4: Simplify right side
    105,682.12x = 8,449,311,896.47
  5. Step 5: Solve for x
    x = 8,449,311,896.47/105,682.12
  6. Step 6: Final answer
    x = 79,950.25

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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.