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Finding the Fourth Proportional to 143,471.59, 215,205.63 and 64,530.07

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Solution

The fourth proportional to 143,471.59, 215,205.63 and 64,530.07 is: 96,794.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,471.59 : 215,205.63 = 64,530.07 : x
  2. Step 2: Convert to fraction form
    143,471.59/215,205.63 = 64,530.07/x
  3. Step 3: Cross multiply
    143,471.59x = 215,205.63 × 64,530.07
  4. Step 4: Simplify right side
    143,471.59x = 13,887,234,368.29
  5. Step 5: Solve for x
    x = 13,887,234,368.29/143,471.59
  6. Step 6: Final answer
    x = 96,794.32

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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.