Home / 345,874.51-518,827.67-105,971.23

Finding the Fourth Proportional to 345,874.51, 518,827.67 and 105,971.23

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Solution

The fourth proportional to 345,874.51, 518,827.67 and 105,971.23 is: 158,961.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,874.51 : 518,827.67 = 105,971.23 : x
  2. Step 2: Convert to fraction form
    345,874.51/518,827.67 = 105,971.23/x
  3. Step 3: Cross multiply
    345,874.51x = 518,827.67 × 105,971.23
  4. Step 4: Simplify right side
    345,874.51x = 54,980,806,347.93
  5. Step 5: Solve for x
    x = 54,980,806,347.93/345,874.51
  6. Step 6: Final answer
    x = 158,961.72

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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.