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Finding the Fourth Proportional to 162,491.37, 224,249.51 and 90,878.05

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Solution

The fourth proportional to 162,491.37, 224,249.51 and 90,878.05 is: 125,418.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,491.37 : 224,249.51 = 90,878.05 : x
  2. Step 2: Convert to fraction form
    162,491.37/224,249.51 = 90,878.05/x
  3. Step 3: Cross multiply
    162,491.37x = 224,249.51 × 90,878.05
  4. Step 4: Simplify right side
    162,491.37x = 20,379,358,689.76
  5. Step 5: Solve for x
    x = 20,379,358,689.76/162,491.37
  6. Step 6: Final answer
    x = 125,418.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.