Home / 134,169.90-185,145.93-76,809.21

Finding the Fourth Proportional to 134,169.90, 185,145.93 and 76,809.21

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Solution

The fourth proportional to 134,169.90, 185,145.93 and 76,809.21 is: 105,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,169.90 : 185,145.93 = 76,809.21 : x
  2. Step 2: Convert to fraction form
    134,169.90/185,145.93 = 76,809.21/x
  3. Step 3: Cross multiply
    134,169.90x = 185,145.93 × 76,809.21
  4. Step 4: Simplify right side
    134,169.90x = 14,220,912,618.02
  5. Step 5: Solve for x
    x = 14,220,912,618.02/134,169.90
  6. Step 6: Final answer
    x = 105,991.83

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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.