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Finding the Fourth Proportional to 162,479.70, 224,221.98 and 90,859.88

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Solution

The fourth proportional to 162,479.70, 224,221.98 and 90,859.88 is: 125,386.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,479.70 : 224,221.98 = 90,859.88 : x
  2. Step 2: Convert to fraction form
    162,479.70/224,221.98 = 90,859.88/x
  3. Step 3: Cross multiply
    162,479.70x = 224,221.98 × 90,859.88
  4. Step 4: Simplify right side
    162,479.70x = 20,372,782,196.16
  5. Step 5: Solve for x
    x = 20,372,782,196.16/162,479.70
  6. Step 6: Final answer
    x = 125,386.63

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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.