Home / 105,359.31-145,396.16-67,110.68

Finding the Fourth Proportional to 105,359.31, 145,396.16 and 67,110.68

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Solution

The fourth proportional to 105,359.31, 145,396.16 and 67,110.68 is: 92,612.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,359.31 : 145,396.16 = 67,110.68 : x
  2. Step 2: Convert to fraction form
    105,359.31/145,396.16 = 67,110.68/x
  3. Step 3: Cross multiply
    105,359.31x = 145,396.16 × 67,110.68
  4. Step 4: Simplify right side
    105,359.31x = 9,757,634,104.45
  5. Step 5: Solve for x
    x = 9,757,634,104.45/105,359.31
  6. Step 6: Final answer
    x = 92,612.93

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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.