Home / 105,340.96-145,334.91-59,986.79

Finding the Fourth Proportional to 105,340.96, 145,334.91 and 59,986.79

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Solution

The fourth proportional to 105,340.96, 145,334.91 and 59,986.79 is: 82,761.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,340.96 : 145,334.91 = 59,986.79 : x
  2. Step 2: Convert to fraction form
    105,340.96/145,334.91 = 59,986.79/x
  3. Step 3: Cross multiply
    105,340.96x = 145,334.91 × 59,986.79
  4. Step 4: Simplify right side
    105,340.96x = 8,718,173,999.16
  5. Step 5: Solve for x
    x = 8,718,173,999.16/105,340.96
  6. Step 6: Final answer
    x = 82,761.48

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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.