Home / 100,609,113.20-150,913,669.80-80,453,721.20

Finding the Fourth Proportional to 100,609,113.20, 150,913,669.80 and 80,453,721.20

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Solution

The fourth proportional to 100,609,113.20, 150,913,669.80 and 80,453,721.20 is: 120,680,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,609,113.20 : 150,913,669.80 = 80,453,721.20 : x
  2. Step 2: Convert to fraction form
    100,609,113.20/150,913,669.80 = 80,453,721.20/x
  3. Step 3: Cross multiply
    100,609,113.20x = 150,913,669.80 × 80,453,721.20
  4. Step 4: Simplify right side
    100,609,113.20x = 12,141,566,315,358,062
  5. Step 5: Solve for x
    x = 12,141,566,315,358,062/100,609,113.20
  6. Step 6: Final answer
    x = 120,680,581.80

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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.