Home / 103,858.53-143,325.39-57,921.07

Finding the Fourth Proportional to 103,858.53, 143,325.39 and 57,921.07

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Solution

The fourth proportional to 103,858.53, 143,325.39 and 57,921.07 is: 79,931.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,858.53 : 143,325.39 = 57,921.07 : x
  2. Step 2: Convert to fraction form
    103,858.53/143,325.39 = 57,921.07/x
  3. Step 3: Cross multiply
    103,858.53x = 143,325.39 × 57,921.07
  4. Step 4: Simplify right side
    103,858.53x = 8,301,559,946.97
  5. Step 5: Solve for x
    x = 8,301,559,946.97/103,858.53
  6. Step 6: Final answer
    x = 79,931.43

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1.5x scale

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.