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Finding the Fourth Proportional to 139,340.48, 192,158.88 and 107,458.88

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Solution

The fourth proportional to 139,340.48, 192,158.88 and 107,458.88 is: 148,192.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,340.48 : 192,158.88 = 107,458.88 : x
  2. Step 2: Convert to fraction form
    139,340.48/192,158.88 = 107,458.88/x
  3. Step 3: Cross multiply
    139,340.48x = 192,158.88 × 107,458.88
  4. Step 4: Simplify right side
    139,340.48x = 20,649,178,026.85
  5. Step 5: Solve for x
    x = 20,649,178,026.85/139,340.48
  6. Step 6: Final answer
    x = 148,192.24

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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.