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Finding the Fourth Proportional to 162,341.85, 224,031.09 and 90,721.86

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Solution

The fourth proportional to 162,341.85, 224,031.09 and 90,721.86 is: 125,195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,341.85 : 224,031.09 = 90,721.86 : x
  2. Step 2: Convert to fraction form
    162,341.85/224,031.09 = 90,721.86/x
  3. Step 3: Cross multiply
    162,341.85x = 224,031.09 × 90,721.86
  4. Step 4: Simplify right side
    162,341.85x = 20,324,517,182.63
  5. Step 5: Solve for x
    x = 20,324,517,182.63/162,341.85
  6. Step 6: Final answer
    x = 125,195.80

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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.