Home / 103,850.32-143,321-57,913.08

Finding the Fourth Proportional to 103,850.32, 143,321 and 57,913.08

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Solution

The fourth proportional to 103,850.32, 143,321 and 57,913.08 is: 79,924.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,850.32 : 143,321 = 57,913.08 : x
  2. Step 2: Convert to fraction form
    103,850.32/143,321 = 57,913.08/x
  3. Step 3: Cross multiply
    103,850.32x = 143,321 × 57,913.08
  4. Step 4: Simplify right side
    103,850.32x = 8,300,160,538.68
  5. Step 5: Solve for x
    x = 8,300,160,538.68/103,850.32
  6. Step 6: Final answer
    x = 79,924.27

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Half scale
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Double scale
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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.