Home / 102,689.10-141,713.64-57,365.28

Finding the Fourth Proportional to 102,689.10, 141,713.64 and 57,365.28

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Solution

The fourth proportional to 102,689.10, 141,713.64 and 57,365.28 is: 79,165.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,689.10 : 141,713.64 = 57,365.28 : x
  2. Step 2: Convert to fraction form
    102,689.10/141,713.64 = 57,365.28/x
  3. Step 3: Cross multiply
    102,689.10x = 141,713.64 × 57,365.28
  4. Step 4: Simplify right side
    102,689.10x = 8,129,442,638.42
  5. Step 5: Solve for x
    x = 8,129,442,638.42/102,689.10
  6. Step 6: Final answer
    x = 79,165.58

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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.