Home / 102,725.48-141,758.45-57,403.84

Finding the Fourth Proportional to 102,725.48, 141,758.45 and 57,403.84

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Solution

The fourth proportional to 102,725.48, 141,758.45 and 57,403.84 is: 79,215.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,725.48 : 141,758.45 = 57,403.84 : x
  2. Step 2: Convert to fraction form
    102,725.48/141,758.45 = 57,403.84/x
  3. Step 3: Cross multiply
    102,725.48x = 141,758.45 × 57,403.84
  4. Step 4: Simplify right side
    102,725.48x = 8,137,479,152.53
  5. Step 5: Solve for x
    x = 8,137,479,152.53/102,725.48
  6. Step 6: Final answer
    x = 79,215.78

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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.