Home / 102,125.88-153,208.26-31,986.36

Finding the Fourth Proportional to 102,125.88, 153,208.26 and 31,986.36

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Solution

The fourth proportional to 102,125.88, 153,208.26 and 31,986.36 is: 47,985.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,125.88 : 153,208.26 = 31,986.36 : x
  2. Step 2: Convert to fraction form
    102,125.88/153,208.26 = 31,986.36/x
  3. Step 3: Cross multiply
    102,125.88x = 153,208.26 × 31,986.36
  4. Step 4: Simplify right side
    102,125.88x = 4,900,574,559.33
  5. Step 5: Solve for x
    x = 4,900,574,559.33/102,125.88
  6. Step 6: Final answer
    x = 47,985.63

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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.