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Finding the Fourth Proportional to 103,857.53, 143,324.01 and 57,920.07

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Solution

The fourth proportional to 103,857.53, 143,324.01 and 57,920.07 is: 79,930.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,857.53 : 143,324.01 = 57,920.07 : x
  2. Step 2: Convert to fraction form
    103,857.53/143,324.01 = 57,920.07/x
  3. Step 3: Cross multiply
    103,857.53x = 143,324.01 × 57,920.07
  4. Step 4: Simplify right side
    103,857.53x = 8,301,336,691.88
  5. Step 5: Solve for x
    x = 8,301,336,691.88/103,857.53
  6. Step 6: Final answer
    x = 79,930.05

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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.