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Finding the Fourth Proportional to 143,570.89, 215,387.10 and 43,739.12

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Solution

The fourth proportional to 143,570.89, 215,387.10 and 43,739.12 is: 65,618.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,570.89 : 215,387.10 = 43,739.12 : x
  2. Step 2: Convert to fraction form
    143,570.89/215,387.10 = 43,739.12/x
  3. Step 3: Cross multiply
    143,570.89x = 215,387.10 × 43,739.12
  4. Step 4: Simplify right side
    143,570.89x = 9,420,842,213.35
  5. Step 5: Solve for x
    x = 9,420,842,213.35/143,570.89
  6. Step 6: Final answer
    x = 65,618.05

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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.