Home / 103,707.09-143,126.49-63,447.62

Finding the Fourth Proportional to 103,707.09, 143,126.49 and 63,447.62

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Solution

The fourth proportional to 103,707.09, 143,126.49 and 63,447.62 is: 87,564.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,707.09 : 143,126.49 = 63,447.62 : x
  2. Step 2: Convert to fraction form
    103,707.09/143,126.49 = 63,447.62/x
  3. Step 3: Cross multiply
    103,707.09x = 143,126.49 × 63,447.62
  4. Step 4: Simplify right side
    103,707.09x = 9,081,035,149.45
  5. Step 5: Solve for x
    x = 9,081,035,149.45/103,707.09
  6. Step 6: Final answer
    x = 87,564.27

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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.