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Finding the Fourth Proportional to 162,139.32, 223,742.86 and 90,523.85

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Solution

The fourth proportional to 162,139.32, 223,742.86 and 90,523.85 is: 124,917.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,139.32 : 223,742.86 = 90,523.85 : x
  2. Step 2: Convert to fraction form
    162,139.32/223,742.86 = 90,523.85/x
  3. Step 3: Cross multiply
    162,139.32x = 223,742.86 × 90,523.85
  4. Step 4: Simplify right side
    162,139.32x = 20,254,063,752.19
  5. Step 5: Solve for x
    x = 20,254,063,752.19/162,139.32
  6. Step 6: Final answer
    x = 124,917.66

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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.