Home / 100,144.14-138,193.59-57,124.77

Finding the Fourth Proportional to 100,144.14, 138,193.59 and 57,124.77

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Solution

The fourth proportional to 100,144.14, 138,193.59 and 57,124.77 is: 78,829.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,144.14 : 138,193.59 = 57,124.77 : x
  2. Step 2: Convert to fraction form
    100,144.14/138,193.59 = 57,124.77/x
  3. Step 3: Cross multiply
    100,144.14x = 138,193.59 × 57,124.77
  4. Step 4: Simplify right side
    100,144.14x = 7,894,277,044.22
  5. Step 5: Solve for x
    x = 7,894,277,044.22/100,144.14
  6. Step 6: Final answer
    x = 78,829.15

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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.