Home / 102,130.80-140,650.20-73,791.60

Finding the Fourth Proportional to 102,130.80, 140,650.20 and 73,791.60

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Solution

The fourth proportional to 102,130.80, 140,650.20 and 73,791.60 is: 101,622.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,130.80 : 140,650.20 = 73,791.60 : x
  2. Step 2: Convert to fraction form
    102,130.80/140,650.20 = 73,791.60/x
  3. Step 3: Cross multiply
    102,130.80x = 140,650.20 × 73,791.60
  4. Step 4: Simplify right side
    102,130.80x = 10,378,803,298.32
  5. Step 5: Solve for x
    x = 10,378,803,298.32/102,130.80
  6. Step 6: Final answer
    x = 101,622.66

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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.