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Finding the Fourth Proportional to 137,301.40, 205,383.42 and 128,903.32

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Solution

The fourth proportional to 137,301.40, 205,383.42 and 128,903.32 is: 192,821.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,301.40 : 205,383.42 = 128,903.32 : x
  2. Step 2: Convert to fraction form
    137,301.40/205,383.42 = 128,903.32/x
  3. Step 3: Cross multiply
    137,301.40x = 205,383.42 × 128,903.32
  4. Step 4: Simplify right side
    137,301.40x = 26,474,604,710.95
  5. Step 5: Solve for x
    x = 26,474,604,710.95/137,301.40
  6. Step 6: Final answer
    x = 192,821.08

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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.