Home / 102,689.36-141,709.77-57,368.06

Finding the Fourth Proportional to 102,689.36, 141,709.77 and 57,368.06

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Solution

The fourth proportional to 102,689.36, 141,709.77 and 57,368.06 is: 79,167.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,689.36 : 141,709.77 = 57,368.06 : x
  2. Step 2: Convert to fraction form
    102,689.36/141,709.77 = 57,368.06/x
  3. Step 3: Cross multiply
    102,689.36x = 141,709.77 × 57,368.06
  4. Step 4: Simplify right side
    102,689.36x = 8,129,613,879.40
  5. Step 5: Solve for x
    x = 8,129,613,879.40/102,689.36
  6. Step 6: Final answer
    x = 79,167.06

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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.