Home / 148,905.12-205,514.64-101,125.92

Finding the Fourth Proportional to 148,905.12, 205,514.64 and 101,125.92

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Solution

The fourth proportional to 148,905.12, 205,514.64 and 101,125.92 is: 139,571.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,905.12 : 205,514.64 = 101,125.92 : x
  2. Step 2: Convert to fraction form
    148,905.12/205,514.64 = 101,125.92/x
  3. Step 3: Cross multiply
    148,905.12x = 205,514.64 × 101,125.92
  4. Step 4: Simplify right side
    148,905.12x = 20,782,857,043.47
  5. Step 5: Solve for x
    x = 20,782,857,043.47/148,905.12
  6. Step 6: Final answer
    x = 139,571.14

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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.