Home / 128,647.12-193,036.28-62,143.96

Finding the Fourth Proportional to 128,647.12, 193,036.28 and 62,143.96

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Solution

The fourth proportional to 128,647.12, 193,036.28 and 62,143.96 is: 93,247.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,647.12 : 193,036.28 = 62,143.96 : x
  2. Step 2: Convert to fraction form
    128,647.12/193,036.28 = 62,143.96/x
  3. Step 3: Cross multiply
    128,647.12x = 193,036.28 × 62,143.96
  4. Step 4: Simplify right side
    128,647.12x = 11,996,038,862.87
  5. Step 5: Solve for x
    x = 11,996,038,862.87/128,647.12
  6. Step 6: Final answer
    x = 93,247.63

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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.