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Finding the Fourth Proportional to 128,710.33, 193,074.14 and 35,216.89

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Solution

The fourth proportional to 128,710.33, 193,074.14 and 35,216.89 is: 52,827.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,710.33 : 193,074.14 = 35,216.89 : x
  2. Step 2: Convert to fraction form
    128,710.33/193,074.14 = 35,216.89/x
  3. Step 3: Cross multiply
    128,710.33x = 193,074.14 × 35,216.89
  4. Step 4: Simplify right side
    128,710.33x = 6,799,470,574.14
  5. Step 5: Solve for x
    x = 6,799,470,574.14/128,710.33
  6. Step 6: Final answer
    x = 52,827.70

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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.