Home / 136,836.91-188,812.40-76,397.85

Finding the Fourth Proportional to 136,836.91, 188,812.40 and 76,397.85

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Solution

The fourth proportional to 136,836.91, 188,812.40 and 76,397.85 is: 105,416.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,836.91 : 188,812.40 = 76,397.85 : x
  2. Step 2: Convert to fraction form
    136,836.91/188,812.40 = 76,397.85/x
  3. Step 3: Cross multiply
    136,836.91x = 188,812.40 × 76,397.85
  4. Step 4: Simplify right side
    136,836.91x = 14,424,860,660.27
  5. Step 5: Solve for x
    x = 14,424,860,660.27/136,836.91
  6. Step 6: Final answer
    x = 105,416.45

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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.