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Finding the Fourth Proportional to 143,521, 215,336.20 and 64,617.08

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Solution

The fourth proportional to 143,521, 215,336.20 and 64,617.08 is: 96,950.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,521 : 215,336.20 = 64,617.08 : x
  2. Step 2: Convert to fraction form
    143,521/215,336.20 = 64,617.08/x
  3. Step 3: Cross multiply
    143,521x = 215,336.20 × 64,617.08
  4. Step 4: Simplify right side
    143,521x = 13,914,396,462.30
  5. Step 5: Solve for x
    x = 13,914,396,462.30/143,521
  6. Step 6: Final answer
    x = 96,950.25

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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.