Home / 129,780.56-194,703.28-36,285.60

Finding the Fourth Proportional to 129,780.56, 194,703.28 and 36,285.60

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Solution

The fourth proportional to 129,780.56, 194,703.28 and 36,285.60 is: 54,437.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,780.56 : 194,703.28 = 36,285.60 : x
  2. Step 2: Convert to fraction form
    129,780.56/194,703.28 = 36,285.60/x
  3. Step 3: Cross multiply
    129,780.56x = 194,703.28 × 36,285.60
  4. Step 4: Simplify right side
    129,780.56x = 7,064,925,336.77
  5. Step 5: Solve for x
    x = 7,064,925,336.77/129,780.56
  6. Step 6: Final answer
    x = 54,437.47

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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.