Home / 103,279.57-142,528.64-57,960.33

Finding the Fourth Proportional to 103,279.57, 142,528.64 and 57,960.33

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Solution

The fourth proportional to 103,279.57, 142,528.64 and 57,960.33 is: 79,986.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,279.57 : 142,528.64 = 57,960.33 : x
  2. Step 2: Convert to fraction form
    103,279.57/142,528.64 = 57,960.33/x
  3. Step 3: Cross multiply
    103,279.57x = 142,528.64 × 57,960.33
  4. Step 4: Simplify right side
    103,279.57x = 8,261,007,008.85
  5. Step 5: Solve for x
    x = 8,261,007,008.85/103,279.57
  6. Step 6: Final answer
    x = 79,986.85

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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.