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Finding the Fourth Proportional to 144,408.96, 216,318.60 and 85,065.12

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Solution

The fourth proportional to 144,408.96, 216,318.60 and 85,065.12 is: 127,424.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,408.96 : 216,318.60 = 85,065.12 : x
  2. Step 2: Convert to fraction form
    144,408.96/216,318.60 = 85,065.12/x
  3. Step 3: Cross multiply
    144,408.96x = 216,318.60 × 85,065.12
  4. Step 4: Simplify right side
    144,408.96x = 18,401,167,667.23
  5. Step 5: Solve for x
    x = 18,401,167,667.23/144,408.96
  6. Step 6: Final answer
    x = 127,424.00

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1.5x scale

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.