Home / 161,435.16-242,152.32-76,939.20

Finding the Fourth Proportional to 161,435.16, 242,152.32 and 76,939.20

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Solution

The fourth proportional to 161,435.16, 242,152.32 and 76,939.20 is: 115,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,435.16 : 242,152.32 = 76,939.20 : x
  2. Step 2: Convert to fraction form
    161,435.16/242,152.32 = 76,939.20/x
  3. Step 3: Cross multiply
    161,435.16x = 242,152.32 × 76,939.20
  4. Step 4: Simplify right side
    161,435.16x = 18,631,005,778.94
  5. Step 5: Solve for x
    x = 18,631,005,778.94/161,435.16
  6. Step 6: Final answer
    x = 115,408.60

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1.5x scale

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.