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Finding the Fourth Proportional to 162,051.64, 223,631.43 and 90,431.64

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Solution

The fourth proportional to 162,051.64, 223,631.43 and 90,431.64 is: 124,795.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,051.64 : 223,631.43 = 90,431.64 : x
  2. Step 2: Convert to fraction form
    162,051.64/223,631.43 = 90,431.64/x
  3. Step 3: Cross multiply
    162,051.64x = 223,631.43 × 90,431.64
  4. Step 4: Simplify right side
    162,051.64x = 20,223,357,140.00
  5. Step 5: Solve for x
    x = 20,223,357,140.00/162,051.64
  6. Step 6: Final answer
    x = 124,795.76

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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.