Home / 102,743.07-141,782.61-57,421.23

Finding the Fourth Proportional to 102,743.07, 141,782.61 and 57,421.23

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Solution

The fourth proportional to 102,743.07, 141,782.61 and 57,421.23 is: 79,239.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,743.07 : 141,782.61 = 57,421.23 : x
  2. Step 2: Convert to fraction form
    102,743.07/141,782.61 = 57,421.23/x
  3. Step 3: Cross multiply
    102,743.07x = 141,782.61 × 57,421.23
  4. Step 4: Simplify right side
    102,743.07x = 8,141,331,858.81
  5. Step 5: Solve for x
    x = 8,141,331,858.81/102,743.07
  6. Step 6: Final answer
    x = 79,239.72

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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.