Home / 102,402.38-153,621.16-31,323.31

Finding the Fourth Proportional to 102,402.38, 153,621.16 and 31,323.31

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Solution

The fourth proportional to 102,402.38, 153,621.16 and 31,323.31 is: 46,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,402.38 : 153,621.16 = 31,323.31 : x
  2. Step 2: Convert to fraction form
    102,402.38/153,621.16 = 31,323.31/x
  3. Step 3: Cross multiply
    102,402.38x = 153,621.16 × 31,323.31
  4. Step 4: Simplify right side
    102,402.38x = 4,811,922,754.88
  5. Step 5: Solve for x
    x = 4,811,922,754.88/102,402.38
  6. Step 6: Final answer
    x = 46,990.34

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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.