Home / 102,666.87-141,678.75-57,345.51

Finding the Fourth Proportional to 102,666.87, 141,678.75 and 57,345.51

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Solution

The fourth proportional to 102,666.87, 141,678.75 and 57,345.51 is: 79,135.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,666.87 : 141,678.75 = 57,345.51 : x
  2. Step 2: Convert to fraction form
    102,666.87/141,678.75 = 57,345.51/x
  3. Step 3: Cross multiply
    102,666.87x = 141,678.75 × 57,345.51
  4. Step 4: Simplify right side
    102,666.87x = 8,124,640,174.91
  5. Step 5: Solve for x
    x = 8,124,640,174.91/102,666.87
  6. Step 6: Final answer
    x = 79,135.95

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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.