Home / 99,378.56-137,148-56,944.16

Finding the Fourth Proportional to 99,378.56, 137,148 and 56,944.16

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Solution

The fourth proportional to 99,378.56, 137,148 and 56,944.16 is: 78,586.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,378.56 : 137,148 = 56,944.16 : x
  2. Step 2: Convert to fraction form
    99,378.56/137,148 = 56,944.16/x
  3. Step 3: Cross multiply
    99,378.56x = 137,148 × 56,944.16
  4. Step 4: Simplify right side
    99,378.56x = 7,809,777,655.68
  5. Step 5: Solve for x
    x = 7,809,777,655.68/99,378.56
  6. Step 6: Final answer
    x = 78,586.14

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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.