Home / 103,064.40-142,232.96-57,742.76

Finding the Fourth Proportional to 103,064.40, 142,232.96 and 57,742.76

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Solution

The fourth proportional to 103,064.40, 142,232.96 and 57,742.76 is: 79,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,064.40 : 142,232.96 = 57,742.76 : x
  2. Step 2: Convert to fraction form
    103,064.40/142,232.96 = 57,742.76/x
  3. Step 3: Cross multiply
    103,064.40x = 142,232.96 × 57,742.76
  4. Step 4: Simplify right side
    103,064.40x = 8,212,923,673.37
  5. Step 5: Solve for x
    x = 8,212,923,673.37/103,064.40
  6. Step 6: Final answer
    x = 79,687.30

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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.