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Finding the Fourth Proportional to 92,313, 137,744.94 and 86,670.54

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Solution

The fourth proportional to 92,313, 137,744.94 and 86,670.54 is: 129,325.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,313 : 137,744.94 = 86,670.54 : x
  2. Step 2: Convert to fraction form
    92,313/137,744.94 = 86,670.54/x
  3. Step 3: Cross multiply
    92,313x = 137,744.94 × 86,670.54
  4. Step 4: Simplify right side
    92,313x = 11,938,428,332.07
  5. Step 5: Solve for x
    x = 11,938,428,332.07/92,313
  6. Step 6: Final answer
    x = 129,325.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.