Home / 117,135.54-161,646.81-63,420.60

Finding the Fourth Proportional to 117,135.54, 161,646.81 and 63,420.60

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Solution

The fourth proportional to 117,135.54, 161,646.81 and 63,420.60 is: 87,520.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,135.54 : 161,646.81 = 63,420.60 : x
  2. Step 2: Convert to fraction form
    117,135.54/161,646.81 = 63,420.60/x
  3. Step 3: Cross multiply
    117,135.54x = 161,646.81 × 63,420.60
  4. Step 4: Simplify right side
    117,135.54x = 10,251,737,678.29
  5. Step 5: Solve for x
    x = 10,251,737,678.29/117,135.54
  6. Step 6: Final answer
    x = 87,520.30

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1.5x scale

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.