Home / 103,636.40-143,018.44-61,197.64

Finding the Fourth Proportional to 103,636.40, 143,018.44 and 61,197.64

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Solution

The fourth proportional to 103,636.40, 143,018.44 and 61,197.64 is: 84,452.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,636.40 : 143,018.44 = 61,197.64 : x
  2. Step 2: Convert to fraction form
    103,636.40/143,018.44 = 61,197.64/x
  3. Step 3: Cross multiply
    103,636.40x = 143,018.44 × 61,197.64
  4. Step 4: Simplify right side
    103,636.40x = 8,752,391,004.48
  5. Step 5: Solve for x
    x = 8,752,391,004.48/103,636.40
  6. Step 6: Final answer
    x = 84,452.87

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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.