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Finding the Fourth Proportional to 128,603.47, 193,029.45 and 62,090.32

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Solution

The fourth proportional to 128,603.47, 193,029.45 and 62,090.32 is: 93,195.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,603.47 : 193,029.45 = 62,090.32 : x
  2. Step 2: Convert to fraction form
    128,603.47/193,029.45 = 62,090.32/x
  3. Step 3: Cross multiply
    128,603.47x = 193,029.45 × 62,090.32
  4. Step 4: Simplify right side
    128,603.47x = 11,985,260,319.92
  5. Step 5: Solve for x
    x = 11,985,260,319.92/128,603.47
  6. Step 6: Final answer
    x = 93,195.47

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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.