Home / 129,929.51-194,907-54,012.35

Finding the Fourth Proportional to 129,929.51, 194,907 and 54,012.35

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Solution

The fourth proportional to 129,929.51, 194,907 and 54,012.35 is: 81,023.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,929.51 : 194,907 = 54,012.35 : x
  2. Step 2: Convert to fraction form
    129,929.51/194,907 = 54,012.35/x
  3. Step 3: Cross multiply
    129,929.51x = 194,907 × 54,012.35
  4. Step 4: Simplify right side
    129,929.51x = 10,527,385,101.45
  5. Step 5: Solve for x
    x = 10,527,385,101.45/129,929.51
  6. Step 6: Final answer
    x = 81,023.82

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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.