Home / 100,890.70-151,330.56-30,764.50

Finding the Fourth Proportional to 100,890.70, 151,330.56 and 30,764.50

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Solution

The fourth proportional to 100,890.70, 151,330.56 and 30,764.50 is: 46,145.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,890.70 : 151,330.56 = 30,764.50 : x
  2. Step 2: Convert to fraction form
    100,890.70/151,330.56 = 30,764.50/x
  3. Step 3: Cross multiply
    100,890.70x = 151,330.56 × 30,764.50
  4. Step 4: Simplify right side
    100,890.70x = 4,655,609,013.12
  5. Step 5: Solve for x
    x = 4,655,609,013.12/100,890.70
  6. Step 6: Final answer
    x = 46,145.08

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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.