Home / 166,638.40-229,721.76-118,808.72

Finding the Fourth Proportional to 166,638.40, 229,721.76 and 118,808.72

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Solution

The fourth proportional to 166,638.40, 229,721.76 and 118,808.72 is: 163,785.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,638.40 : 229,721.76 = 118,808.72 : x
  2. Step 2: Convert to fraction form
    166,638.40/229,721.76 = 118,808.72/x
  3. Step 3: Cross multiply
    166,638.40x = 229,721.76 × 118,808.72
  4. Step 4: Simplify right side
    166,638.40x = 27,292,948,261.75
  5. Step 5: Solve for x
    x = 27,292,948,261.75/166,638.40
  6. Step 6: Final answer
    x = 163,785.47

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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.