Home / 163,411.12-245,169.48-80,246.80

Finding the Fourth Proportional to 163,411.12, 245,169.48 and 80,246.80

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Solution

The fourth proportional to 163,411.12, 245,169.48 and 80,246.80 is: 120,396.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,411.12 : 245,169.48 = 80,246.80 : x
  2. Step 2: Convert to fraction form
    163,411.12/245,169.48 = 80,246.80/x
  3. Step 3: Cross multiply
    163,411.12x = 245,169.48 × 80,246.80
  4. Step 4: Simplify right side
    163,411.12x = 19,674,066,227.66
  5. Step 5: Solve for x
    x = 19,674,066,227.66/163,411.12
  6. Step 6: Final answer
    x = 120,396.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.