Home / 102,451.05-141,381.84-57,129.57

Finding the Fourth Proportional to 102,451.05, 141,381.84 and 57,129.57

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Solution

The fourth proportional to 102,451.05, 141,381.84 and 57,129.57 is: 78,838.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,451.05 : 141,381.84 = 57,129.57 : x
  2. Step 2: Convert to fraction form
    102,451.05/141,381.84 = 57,129.57/x
  3. Step 3: Cross multiply
    102,451.05x = 141,381.84 × 57,129.57
  4. Step 4: Simplify right side
    102,451.05x = 8,077,083,725.01
  5. Step 5: Solve for x
    x = 8,077,083,725.01/102,451.05
  6. Step 6: Final answer
    x = 78,838.47

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1.5x scale

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.