Home / 143,399.32-215,036.80-47,309.43

Finding the Fourth Proportional to 143,399.32, 215,036.80 and 47,309.43

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Solution

The fourth proportional to 143,399.32, 215,036.80 and 47,309.43 is: 70,943.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,399.32 : 215,036.80 = 47,309.43 : x
  2. Step 2: Convert to fraction form
    143,399.32/215,036.80 = 47,309.43/x
  3. Step 3: Cross multiply
    143,399.32x = 215,036.80 × 47,309.43
  4. Step 4: Simplify right side
    143,399.32x = 10,173,268,437.02
  5. Step 5: Solve for x
    x = 10,173,268,437.02/143,399.32
  6. Step 6: Final answer
    x = 70,943.63

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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.