Home / 128,378.51-192,567.60-49,437.38

Finding the Fourth Proportional to 128,378.51, 192,567.60 and 49,437.38

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Solution

The fourth proportional to 128,378.51, 192,567.60 and 49,437.38 is: 74,156.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,378.51 : 192,567.60 = 49,437.38 : x
  2. Step 2: Convert to fraction form
    128,378.51/192,567.60 = 49,437.38/x
  3. Step 3: Cross multiply
    128,378.51x = 192,567.60 × 49,437.38
  4. Step 4: Simplify right side
    128,378.51x = 9,520,036,654.05
  5. Step 5: Solve for x
    x = 9,520,036,654.05/128,378.51
  6. Step 6: Final answer
    x = 74,156.00

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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.