Home / 121,121,467.80-181,383,603.30-80,512,085.40

Finding the Fourth Proportional to 121,121,467.80, 181,383,603.30 and 80,512,085.40

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Solution

The fourth proportional to 121,121,467.80, 181,383,603.30 and 80,512,085.40 is: 120,569,643.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,121,467.80 : 181,383,603.30 = 80,512,085.40 : x
  2. Step 2: Convert to fraction form
    121,121,467.80/181,383,603.30 = 80,512,085.40/x
  3. Step 3: Cross multiply
    121,121,467.80x = 181,383,603.30 × 80,512,085.40
  4. Step 4: Simplify right side
    121,121,467.80x = 14,603,572,159,049,324
  5. Step 5: Solve for x
    x = 14,603,572,159,049,324/121,121,467.80
  6. Step 6: Final answer
    x = 120,569,643.22

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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.