Home / 103,558.05-142,910.94-57,618.36

Finding the Fourth Proportional to 103,558.05, 142,910.94 and 57,618.36

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Solution

The fourth proportional to 103,558.05, 142,910.94 and 57,618.36 is: 79,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,558.05 : 142,910.94 = 57,618.36 : x
  2. Step 2: Convert to fraction form
    103,558.05/142,910.94 = 57,618.36/x
  3. Step 3: Cross multiply
    103,558.05x = 142,910.94 × 57,618.36
  4. Step 4: Simplify right side
    103,558.05x = 8,234,293,988.86
  5. Step 5: Solve for x
    x = 8,234,293,988.86/103,558.05
  6. Step 6: Final answer
    x = 79,513.80

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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.