Home / 139,972.05-210,056.49-126,587.61

Finding the Fourth Proportional to 139,972.05, 210,056.49 and 126,587.61

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Solution

The fourth proportional to 139,972.05, 210,056.49 and 126,587.61 is: 189,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,972.05 : 210,056.49 = 126,587.61 : x
  2. Step 2: Convert to fraction form
    139,972.05/210,056.49 = 126,587.61/x
  3. Step 3: Cross multiply
    139,972.05x = 210,056.49 × 126,587.61
  4. Step 4: Simplify right side
    139,972.05x = 26,590,549,034.09
  5. Step 5: Solve for x
    x = 26,590,549,034.09/139,972.05
  6. Step 6: Final answer
    x = 189,970.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.