Home / 305,674.38-458,364.02-128,133.72

Finding the Fourth Proportional to 305,674.38, 458,364.02 and 128,133.72

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Solution

The fourth proportional to 305,674.38, 458,364.02 and 128,133.72 is: 192,138.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,674.38 : 458,364.02 = 128,133.72 : x
  2. Step 2: Convert to fraction form
    305,674.38/458,364.02 = 128,133.72/x
  3. Step 3: Cross multiply
    305,674.38x = 458,364.02 × 128,133.72
  4. Step 4: Simplify right side
    305,674.38x = 58,731,886,356.09
  5. Step 5: Solve for x
    x = 58,731,886,356.09/305,674.38
  6. Step 6: Final answer
    x = 192,138.73

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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.