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Finding the Fourth Proportional to 162,240.68, 223,889.78 and 90,621.72

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Solution

The fourth proportional to 162,240.68, 223,889.78 and 90,621.72 is: 125,056.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,240.68 : 223,889.78 = 90,621.72 : x
  2. Step 2: Convert to fraction form
    162,240.68/223,889.78 = 90,621.72/x
  3. Step 3: Cross multiply
    162,240.68x = 223,889.78 × 90,621.72
  4. Step 4: Simplify right side
    162,240.68x = 20,289,276,954.02
  5. Step 5: Solve for x
    x = 20,289,276,954.02/162,240.68
  6. Step 6: Final answer
    x = 125,056.66

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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.