Home / 103,981.55-143,479.36-58,661.51

Finding the Fourth Proportional to 103,981.55, 143,479.36 and 58,661.51

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Solution

The fourth proportional to 103,981.55, 143,479.36 and 58,661.51 is: 80,944.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,981.55 : 143,479.36 = 58,661.51 : x
  2. Step 2: Convert to fraction form
    103,981.55/143,479.36 = 58,661.51/x
  3. Step 3: Cross multiply
    103,981.55x = 143,479.36 × 58,661.51
  4. Step 4: Simplify right side
    103,981.55x = 8,416,715,911.43
  5. Step 5: Solve for x
    x = 8,416,715,911.43/103,981.55
  6. Step 6: Final answer
    x = 80,944.32

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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.