Home / 140,383.79-193,729.73-76,721.59

Finding the Fourth Proportional to 140,383.79, 193,729.73 and 76,721.59

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Solution

The fourth proportional to 140,383.79, 193,729.73 and 76,721.59 is: 105,875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,383.79 : 193,729.73 = 76,721.59 : x
  2. Step 2: Convert to fraction form
    140,383.79/193,729.73 = 76,721.59/x
  3. Step 3: Cross multiply
    140,383.79x = 193,729.73 × 76,721.59
  4. Step 4: Simplify right side
    140,383.79x = 14,863,252,915.87
  5. Step 5: Solve for x
    x = 14,863,252,915.87/140,383.79
  6. Step 6: Final answer
    x = 105,875.85

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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.