Home / 102,257.51-141,121.19-61,434.12

Finding the Fourth Proportional to 102,257.51, 141,121.19 and 61,434.12

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Solution

The fourth proportional to 102,257.51, 141,121.19 and 61,434.12 is: 84,782.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,257.51 : 141,121.19 = 61,434.12 : x
  2. Step 2: Convert to fraction form
    102,257.51/141,121.19 = 61,434.12/x
  3. Step 3: Cross multiply
    102,257.51x = 141,121.19 × 61,434.12
  4. Step 4: Simplify right side
    102,257.51x = 8,669,655,813.83
  5. Step 5: Solve for x
    x = 8,669,655,813.83/102,257.51
  6. Step 6: Final answer
    x = 84,782.59

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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.