Home / 128,882.27-193,464.81-102,398.48

Finding the Fourth Proportional to 128,882.27, 193,464.81 and 102,398.48

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Solution

The fourth proportional to 128,882.27, 193,464.81 and 102,398.48 is: 153,710.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,882.27 : 193,464.81 = 102,398.48 : x
  2. Step 2: Convert to fraction form
    128,882.27/193,464.81 = 102,398.48/x
  3. Step 3: Cross multiply
    128,882.27x = 193,464.81 × 102,398.48
  4. Step 4: Simplify right side
    128,882.27x = 19,810,502,477.49
  5. Step 5: Solve for x
    x = 19,810,502,477.49/128,882.27
  6. Step 6: Final answer
    x = 153,710.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.