Home / 91,727.55-137,427.30-77,621.40

Finding the Fourth Proportional to 91,727.55, 137,427.30 and 77,621.40

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Solution

The fourth proportional to 91,727.55, 137,427.30 and 77,621.40 is: 116,293.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,727.55 : 137,427.30 = 77,621.40 : x
  2. Step 2: Convert to fraction form
    91,727.55/137,427.30 = 77,621.40/x
  3. Step 3: Cross multiply
    91,727.55x = 137,427.30 × 77,621.40
  4. Step 4: Simplify right side
    91,727.55x = 10,667,299,424.22
  5. Step 5: Solve for x
    x = 10,667,299,424.22/91,727.55
  6. Step 6: Final answer
    x = 116,293.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.