Home / 258,172.81-387,125.51-115,895.53

Finding the Fourth Proportional to 258,172.81, 387,125.51 and 115,895.53

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Solution

The fourth proportional to 258,172.81, 387,125.51 and 115,895.53 is: 173,783.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,172.81 : 387,125.51 = 115,895.53 : x
  2. Step 2: Convert to fraction form
    258,172.81/387,125.51 = 115,895.53/x
  3. Step 3: Cross multiply
    258,172.81x = 387,125.51 × 115,895.53
  4. Step 4: Simplify right side
    258,172.81x = 44,866,116,157.97
  5. Step 5: Solve for x
    x = 44,866,116,157.97/258,172.81
  6. Step 6: Final answer
    x = 173,783.27

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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.