Home / 120,411.48-166,194.54-70,139.64

Finding the Fourth Proportional to 120,411.48, 166,194.54 and 70,139.64

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Solution

The fourth proportional to 120,411.48, 166,194.54 and 70,139.64 is: 96,808.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,411.48 : 166,194.54 = 70,139.64 : x
  2. Step 2: Convert to fraction form
    120,411.48/166,194.54 = 70,139.64/x
  3. Step 3: Cross multiply
    120,411.48x = 166,194.54 × 70,139.64
  4. Step 4: Simplify right side
    120,411.48x = 11,656,825,205.57
  5. Step 5: Solve for x
    x = 11,656,825,205.57/120,411.48
  6. Step 6: Final answer
    x = 96,808.25

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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.