Home / 120,811.71-166,714.76-72,440.33

Finding the Fourth Proportional to 120,811.71, 166,714.76 and 72,440.33

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Solution

The fourth proportional to 120,811.71, 166,714.76 and 72,440.33 is: 99,964.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,811.71 : 166,714.76 = 72,440.33 : x
  2. Step 2: Convert to fraction form
    120,811.71/166,714.76 = 72,440.33/x
  3. Step 3: Cross multiply
    120,811.71x = 166,714.76 × 72,440.33
  4. Step 4: Simplify right side
    120,811.71x = 12,076,872,465.96
  5. Step 5: Solve for x
    x = 12,076,872,465.96/120,811.71
  6. Step 6: Final answer
    x = 99,964.42

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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.