Home / 117,135.49-161,646.76-63,420.50

Finding the Fourth Proportional to 117,135.49, 161,646.76 and 63,420.50

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Solution

The fourth proportional to 117,135.49, 161,646.76 and 63,420.50 is: 87,520.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,135.49 : 161,646.76 = 63,420.50 : x
  2. Step 2: Convert to fraction form
    117,135.49/161,646.76 = 63,420.50/x
  3. Step 3: Cross multiply
    117,135.49x = 161,646.76 × 63,420.50
  4. Step 4: Simplify right side
    117,135.49x = 10,251,718,342.58
  5. Step 5: Solve for x
    x = 10,251,718,342.58/117,135.49
  6. Step 6: Final answer
    x = 87,520.17

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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.