Home / 139,909.44-193,075.04-76,247.20

Finding the Fourth Proportional to 139,909.44, 193,075.04 and 76,247.20

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Solution

The fourth proportional to 139,909.44, 193,075.04 and 76,247.20 is: 105,221.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,909.44 : 193,075.04 = 76,247.20 : x
  2. Step 2: Convert to fraction form
    139,909.44/193,075.04 = 76,247.20/x
  3. Step 3: Cross multiply
    139,909.44x = 193,075.04 × 76,247.20
  4. Step 4: Simplify right side
    139,909.44x = 14,721,431,189.89
  5. Step 5: Solve for x
    x = 14,721,431,189.89/139,909.44
  6. Step 6: Final answer
    x = 105,221.14

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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.