Home / 387,435.96-581,153.06-103,126.56

Finding the Fourth Proportional to 387,435.96, 581,153.06 and 103,126.56

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Solution

The fourth proportional to 387,435.96, 581,153.06 and 103,126.56 is: 154,689.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,435.96 : 581,153.06 = 103,126.56 : x
  2. Step 2: Convert to fraction form
    387,435.96/581,153.06 = 103,126.56/x
  3. Step 3: Cross multiply
    387,435.96x = 581,153.06 × 103,126.56
  4. Step 4: Simplify right side
    387,435.96x = 59,932,315,911.27
  5. Step 5: Solve for x
    x = 59,932,315,911.27/387,435.96
  6. Step 6: Final answer
    x = 154,689.61

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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.