Home / 91,341.88-137,137.07-51,388.98

Finding the Fourth Proportional to 91,341.88, 137,137.07 and 51,388.98

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Solution

The fourth proportional to 91,341.88, 137,137.07 and 51,388.98 is: 77,153.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,341.88 : 137,137.07 = 51,388.98 : x
  2. Step 2: Convert to fraction form
    91,341.88/137,137.07 = 51,388.98/x
  3. Step 3: Cross multiply
    91,341.88x = 137,137.07 × 51,388.98
  4. Step 4: Simplify right side
    91,341.88x = 7,047,334,147.49
  5. Step 5: Solve for x
    x = 7,047,334,147.49/91,341.88
  6. Step 6: Final answer
    x = 77,153.37

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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.