Home / 139,852.34-193,001.19-79,421.30

Finding the Fourth Proportional to 139,852.34, 193,001.19 and 79,421.30

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Solution

The fourth proportional to 139,852.34, 193,001.19 and 79,421.30 is: 109,604.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,852.34 : 193,001.19 = 79,421.30 : x
  2. Step 2: Convert to fraction form
    139,852.34/193,001.19 = 79,421.30/x
  3. Step 3: Cross multiply
    139,852.34x = 193,001.19 × 79,421.30
  4. Step 4: Simplify right side
    139,852.34x = 15,328,405,411.35
  5. Step 5: Solve for x
    x = 15,328,405,411.35/139,852.34
  6. Step 6: Final answer
    x = 109,604.21

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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.