Home / 137,909.47-190,323.18-103,857.88

Finding the Fourth Proportional to 137,909.47, 190,323.18 and 103,857.88

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Solution

The fourth proportional to 137,909.47, 190,323.18 and 103,857.88 is: 143,329.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,909.47 : 190,323.18 = 103,857.88 : x
  2. Step 2: Convert to fraction form
    137,909.47/190,323.18 = 103,857.88/x
  3. Step 3: Cross multiply
    137,909.47x = 190,323.18 × 103,857.88
  4. Step 4: Simplify right side
    137,909.47x = 19,766,561,989.66
  5. Step 5: Solve for x
    x = 19,766,561,989.66/137,909.47
  6. Step 6: Final answer
    x = 143,329.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.