Home / 102,689.48-141,707.04-57,367.28

Finding the Fourth Proportional to 102,689.48, 141,707.04 and 57,367.28

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Solution

The fourth proportional to 102,689.48, 141,707.04 and 57,367.28 is: 79,164.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,689.48 : 141,707.04 = 57,367.28 : x
  2. Step 2: Convert to fraction form
    102,689.48/141,707.04 = 57,367.28/x
  3. Step 3: Cross multiply
    102,689.48x = 141,707.04 × 57,367.28
  4. Step 4: Simplify right side
    102,689.48x = 8,129,347,441.65
  5. Step 5: Solve for x
    x = 8,129,347,441.65/102,689.48
  6. Step 6: Final answer
    x = 79,164.36

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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.