Home / 103,708.19-143,057.66-65,454.14

Finding the Fourth Proportional to 103,708.19, 143,057.66 and 65,454.14

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Solution

The fourth proportional to 103,708.19, 143,057.66 and 65,454.14 is: 90,289.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,708.19 : 143,057.66 = 65,454.14 : x
  2. Step 2: Convert to fraction form
    103,708.19/143,057.66 = 65,454.14/x
  3. Step 3: Cross multiply
    103,708.19x = 143,057.66 × 65,454.14
  4. Step 4: Simplify right side
    103,708.19x = 9,363,716,105.71
  5. Step 5: Solve for x
    x = 9,363,716,105.71/103,708.19
  6. Step 6: Final answer
    x = 90,289.08

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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.