Home / 143,549.79-215,242.64-43,680.45

Finding the Fourth Proportional to 143,549.79, 215,242.64 and 43,680.45

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Solution

The fourth proportional to 143,549.79, 215,242.64 and 43,680.45 is: 65,495.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,549.79 : 215,242.64 = 43,680.45 : x
  2. Step 2: Convert to fraction form
    143,549.79/215,242.64 = 43,680.45/x
  3. Step 3: Cross multiply
    143,549.79x = 215,242.64 × 43,680.45
  4. Step 4: Simplify right side
    143,549.79x = 9,401,895,155.99
  5. Step 5: Solve for x
    x = 9,401,895,155.99/143,549.79
  6. Step 6: Final answer
    x = 65,495.71

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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.