Home / 102,780.23-141,837.77-57,460.73

Finding the Fourth Proportional to 102,780.23, 141,837.77 and 57,460.73

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Solution

The fourth proportional to 102,780.23, 141,837.77 and 57,460.73 is: 79,296.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,780.23 : 141,837.77 = 57,460.73 : x
  2. Step 2: Convert to fraction form
    102,780.23/141,837.77 = 57,460.73/x
  3. Step 3: Cross multiply
    102,780.23x = 141,837.77 × 57,460.73
  4. Step 4: Simplify right side
    102,780.23x = 8,150,101,451.18
  5. Step 5: Solve for x
    x = 8,150,101,451.18/102,780.23
  6. Step 6: Final answer
    x = 79,296.39

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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.