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Finding the Fourth Proportional to 162,009.86, 223,571.48 and 90,397.76

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Solution

The fourth proportional to 162,009.86, 223,571.48 and 90,397.76 is: 124,747.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,009.86 : 223,571.48 = 90,397.76 : x
  2. Step 2: Convert to fraction form
    162,009.86/223,571.48 = 90,397.76/x
  3. Step 3: Cross multiply
    162,009.86x = 223,571.48 × 90,397.76
  4. Step 4: Simplify right side
    162,009.86x = 20,210,360,991.88
  5. Step 5: Solve for x
    x = 20,210,360,991.88/162,009.86
  6. Step 6: Final answer
    x = 124,747.72

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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.