Home / 99,748.14-137,657.70-57,309.42

Finding the Fourth Proportional to 99,748.14, 137,657.70 and 57,309.42

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Solution

The fourth proportional to 99,748.14, 137,657.70 and 57,309.42 is: 79,090.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,748.14 : 137,657.70 = 57,309.42 : x
  2. Step 2: Convert to fraction form
    99,748.14/137,657.70 = 57,309.42/x
  3. Step 3: Cross multiply
    99,748.14x = 137,657.70 × 57,309.42
  4. Step 4: Simplify right side
    99,748.14x = 7,889,082,945.53
  5. Step 5: Solve for x
    x = 7,889,082,945.53/99,748.14
  6. Step 6: Final answer
    x = 79,090.03

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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.