Home / 103,750.81-155,674.82-51,131.59

Finding the Fourth Proportional to 103,750.81, 155,674.82 and 51,131.59

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Solution

The fourth proportional to 103,750.81, 155,674.82 and 51,131.59 is: 76,721.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,750.81 : 155,674.82 = 51,131.59 : x
  2. Step 2: Convert to fraction form
    103,750.81/155,674.82 = 51,131.59/x
  3. Step 3: Cross multiply
    103,750.81x = 155,674.82 × 51,131.59
  4. Step 4: Simplify right side
    103,750.81x = 7,959,900,813.91
  5. Step 5: Solve for x
    x = 7,959,900,813.91/103,750.81
  6. Step 6: Final answer
    x = 76,721.34

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1.5x scale

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.