Home / 100,022.01-138,032.78-57,000.58

Finding the Fourth Proportional to 100,022.01, 138,032.78 and 57,000.58

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Solution

The fourth proportional to 100,022.01, 138,032.78 and 57,000.58 is: 78,662.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,022.01 : 138,032.78 = 57,000.58 : x
  2. Step 2: Convert to fraction form
    100,022.01/138,032.78 = 57,000.58/x
  3. Step 3: Cross multiply
    100,022.01x = 138,032.78 × 57,000.58
  4. Step 4: Simplify right side
    100,022.01x = 7,867,947,888.93
  5. Step 5: Solve for x
    x = 7,867,947,888.93/100,022.01
  6. Step 6: Final answer
    x = 78,662.17

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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.