Home / 102,078.03-140,830.37-61,777.10

Finding the Fourth Proportional to 102,078.03, 140,830.37 and 61,777.10

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Solution

The fourth proportional to 102,078.03, 140,830.37 and 61,777.10 is: 85,229.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,078.03 : 140,830.37 = 61,777.10 : x
  2. Step 2: Convert to fraction form
    102,078.03/140,830.37 = 61,777.10/x
  3. Step 3: Cross multiply
    102,078.03x = 140,830.37 × 61,777.10
  4. Step 4: Simplify right side
    102,078.03x = 8,700,090,837.49
  5. Step 5: Solve for x
    x = 8,700,090,837.49/102,078.03
  6. Step 6: Final answer
    x = 85,229.81

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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.