Home / 102,705.93-141,720.09-57,378.29

Finding the Fourth Proportional to 102,705.93, 141,720.09 and 57,378.29

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Solution

The fourth proportional to 102,705.93, 141,720.09 and 57,378.29 is: 79,174.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,705.93 : 141,720.09 = 57,378.29 : x
  2. Step 2: Convert to fraction form
    102,705.93/141,720.09 = 57,378.29/x
  3. Step 3: Cross multiply
    102,705.93x = 141,720.09 × 57,378.29
  4. Step 4: Simplify right side
    102,705.93x = 8,131,655,714.25
  5. Step 5: Solve for x
    x = 8,131,655,714.25/102,705.93
  6. Step 6: Final answer
    x = 79,174.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.