Home / 143,400.32-215,038.30-47,310.43

Finding the Fourth Proportional to 143,400.32, 215,038.30 and 47,310.43

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Solution

The fourth proportional to 143,400.32, 215,038.30 and 47,310.43 is: 70,945.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,400.32 : 215,038.30 = 47,310.43 : x
  2. Step 2: Convert to fraction form
    143,400.32/215,038.30 = 47,310.43/x
  3. Step 3: Cross multiply
    143,400.32x = 215,038.30 × 47,310.43
  4. Step 4: Simplify right side
    143,400.32x = 10,173,554,439.47
  5. Step 5: Solve for x
    x = 10,173,554,439.47/143,400.32
  6. Step 6: Final answer
    x = 70,945.13

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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.