Home / 136,902.92-188,920.50-76,472.60

Finding the Fourth Proportional to 136,902.92, 188,920.50 and 76,472.60

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Solution

The fourth proportional to 136,902.92, 188,920.50 and 76,472.60 is: 105,529.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,902.92 : 188,920.50 = 76,472.60 : x
  2. Step 2: Convert to fraction form
    136,902.92/188,920.50 = 76,472.60/x
  3. Step 3: Cross multiply
    136,902.92x = 188,920.50 × 76,472.60
  4. Step 4: Simplify right side
    136,902.92x = 14,447,241,828.30
  5. Step 5: Solve for x
    x = 14,447,241,828.30/136,902.92
  6. Step 6: Final answer
    x = 105,529.10

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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.