Home / 102,451.23-141,379.83-57,130.52

Finding the Fourth Proportional to 102,451.23, 141,379.83 and 57,130.52

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Solution

The fourth proportional to 102,451.23, 141,379.83 and 57,130.52 is: 78,838.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,451.23 : 141,379.83 = 57,130.52 : x
  2. Step 2: Convert to fraction form
    102,451.23/141,379.83 = 57,130.52/x
  3. Step 3: Cross multiply
    102,451.23x = 141,379.83 × 57,130.52
  4. Step 4: Simplify right side
    102,451.23x = 8,077,102,498.51
  5. Step 5: Solve for x
    x = 8,077,102,498.51/102,451.23
  6. Step 6: Final answer
    x = 78,838.51

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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.