Home / 129,865.40-194,663.70-70,575.80

Finding the Fourth Proportional to 129,865.40, 194,663.70 and 70,575.80

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Solution

The fourth proportional to 129,865.40, 194,663.70 and 70,575.80 is: 105,790.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,865.40 : 194,663.70 = 70,575.80 : x
  2. Step 2: Convert to fraction form
    129,865.40/194,663.70 = 70,575.80/x
  3. Step 3: Cross multiply
    129,865.40x = 194,663.70 × 70,575.80
  4. Step 4: Simplify right side
    129,865.40x = 13,738,546,358.46
  5. Step 5: Solve for x
    x = 13,738,546,358.46/129,865.40
  6. Step 6: Final answer
    x = 105,790.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.