Home / 100,817.40-151,218.81-48,212.76

Finding the Fourth Proportional to 100,817.40, 151,218.81 and 48,212.76

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Solution

The fourth proportional to 100,817.40, 151,218.81 and 48,212.76 is: 72,315.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,817.40 : 151,218.81 = 48,212.76 : x
  2. Step 2: Convert to fraction form
    100,817.40/151,218.81 = 48,212.76/x
  3. Step 3: Cross multiply
    100,817.40x = 151,218.81 × 48,212.76
  4. Step 4: Simplify right side
    100,817.40x = 7,290,676,194.02
  5. Step 5: Solve for x
    x = 7,290,676,194.02/100,817.40
  6. Step 6: Final answer
    x = 72,315.65

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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.