Home / 103,420.84-154,987.73-47,123.36

Finding the Fourth Proportional to 103,420.84, 154,987.73 and 47,123.36

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Solution

The fourth proportional to 103,420.84, 154,987.73 and 47,123.36 is: 70,619.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,420.84 : 154,987.73 = 47,123.36 : x
  2. Step 2: Convert to fraction form
    103,420.84/154,987.73 = 47,123.36/x
  3. Step 3: Cross multiply
    103,420.84x = 154,987.73 × 47,123.36
  4. Step 4: Simplify right side
    103,420.84x = 7,303,542,596.37
  5. Step 5: Solve for x
    x = 7,303,542,596.37/103,420.84
  6. Step 6: Final answer
    x = 70,619.64

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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.