Home / 143,238.78-197,464.23-100,665.18

Finding the Fourth Proportional to 143,238.78, 197,464.23 and 100,665.18

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Solution

The fourth proportional to 143,238.78, 197,464.23 and 100,665.18 is: 138,773.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,238.78 : 197,464.23 = 100,665.18 : x
  2. Step 2: Convert to fraction form
    143,238.78/197,464.23 = 100,665.18/x
  3. Step 3: Cross multiply
    143,238.78x = 197,464.23 × 100,665.18
  4. Step 4: Simplify right side
    143,238.78x = 19,877,772,256.51
  5. Step 5: Solve for x
    x = 19,877,772,256.51/143,238.78
  6. Step 6: Final answer
    x = 138,773.68

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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.