Home / 103,177.53-142,332.59-67,388.49

Finding the Fourth Proportional to 103,177.53, 142,332.59 and 67,388.49

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Solution

The fourth proportional to 103,177.53, 142,332.59 and 67,388.49 is: 92,961.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,177.53 : 142,332.59 = 67,388.49 : x
  2. Step 2: Convert to fraction form
    103,177.53/142,332.59 = 67,388.49/x
  3. Step 3: Cross multiply
    103,177.53x = 142,332.59 × 67,388.49
  4. Step 4: Simplify right side
    103,177.53x = 9,591,578,486.36
  5. Step 5: Solve for x
    x = 9,591,578,486.36/103,177.53
  6. Step 6: Final answer
    x = 92,961.89

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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.