Home / 100,820.40-151,223.31-48,215.76

Finding the Fourth Proportional to 100,820.40, 151,223.31 and 48,215.76

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Solution

The fourth proportional to 100,820.40, 151,223.31 and 48,215.76 is: 72,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,820.40 : 151,223.31 = 48,215.76 : x
  2. Step 2: Convert to fraction form
    100,820.40/151,223.31 = 48,215.76/x
  3. Step 3: Cross multiply
    100,820.40x = 151,223.31 × 48,215.76
  4. Step 4: Simplify right side
    100,820.40x = 7,291,346,821.37
  5. Step 5: Solve for x
    x = 7,291,346,821.37/100,820.40
  6. Step 6: Final answer
    x = 72,320.15

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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.