Home / 99,756.24-137,645.28-57,316.56

Finding the Fourth Proportional to 99,756.24, 137,645.28 and 57,316.56

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Solution

The fourth proportional to 99,756.24, 137,645.28 and 57,316.56 is: 79,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,756.24 : 137,645.28 = 57,316.56 : x
  2. Step 2: Convert to fraction form
    99,756.24/137,645.28 = 57,316.56/x
  3. Step 3: Cross multiply
    99,756.24x = 137,645.28 × 57,316.56
  4. Step 4: Simplify right side
    99,756.24x = 7,889,353,949.84
  5. Step 5: Solve for x
    x = 7,889,353,949.84/99,756.24
  6. Step 6: Final answer
    x = 79,086.32

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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.