Home / 100,347.24-138,483.44-57,333.81

Finding the Fourth Proportional to 100,347.24, 138,483.44 and 57,333.81

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Solution

The fourth proportional to 100,347.24, 138,483.44 and 57,333.81 is: 79,123.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,347.24 : 138,483.44 = 57,333.81 : x
  2. Step 2: Convert to fraction form
    100,347.24/138,483.44 = 57,333.81/x
  3. Step 3: Cross multiply
    100,347.24x = 138,483.44 × 57,333.81
  4. Step 4: Simplify right side
    100,347.24x = 7,939,783,237.11
  5. Step 5: Solve for x
    x = 7,939,783,237.11/100,347.24
  6. Step 6: Final answer
    x = 79,123.09

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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.