Home / 135,145.56-186,487.02-78,552.12

Finding the Fourth Proportional to 135,145.56, 186,487.02 and 78,552.12

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Solution

The fourth proportional to 135,145.56, 186,487.02 and 78,552.12 is: 108,393.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,145.56 : 186,487.02 = 78,552.12 : x
  2. Step 2: Convert to fraction form
    135,145.56/186,487.02 = 78,552.12/x
  3. Step 3: Cross multiply
    135,145.56x = 186,487.02 × 78,552.12
  4. Step 4: Simplify right side
    135,145.56x = 14,648,950,773.48
  5. Step 5: Solve for x
    x = 14,648,950,773.48/135,145.56
  6. Step 6: Final answer
    x = 108,393.87

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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.