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Finding the Fourth Proportional to 162,129.08, 223,729.08 and 90,513.71

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Solution

The fourth proportional to 162,129.08, 223,729.08 and 90,513.71 is: 124,903.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,129.08 : 223,729.08 = 90,513.71 : x
  2. Step 2: Convert to fraction form
    162,129.08/223,729.08 = 90,513.71/x
  3. Step 3: Cross multiply
    162,129.08x = 223,729.08 × 90,513.71
  4. Step 4: Simplify right side
    162,129.08x = 20,250,549,065.69
  5. Step 5: Solve for x
    x = 20,250,549,065.69/162,129.08
  6. Step 6: Final answer
    x = 124,903.87

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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.