Home / 103,087.11-142,256.77-57,144.82

Finding the Fourth Proportional to 103,087.11, 142,256.77 and 57,144.82

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Solution

The fourth proportional to 103,087.11, 142,256.77 and 57,144.82 is: 78,857.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,087.11 : 142,256.77 = 57,144.82 : x
  2. Step 2: Convert to fraction form
    103,087.11/142,256.77 = 57,144.82/x
  3. Step 3: Cross multiply
    103,087.11x = 142,256.77 × 57,144.82
  4. Step 4: Simplify right side
    103,087.11x = 8,129,237,515.43
  5. Step 5: Solve for x
    x = 8,129,237,515.43/103,087.11
  6. Step 6: Final answer
    x = 78,857.94

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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.