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Finding the Fourth Proportional to 163,460.32, 225,573.70 and 90,861.32

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Solution

The fourth proportional to 163,460.32, 225,573.70 and 90,861.32 is: 125,387.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,460.32 : 225,573.70 = 90,861.32 : x
  2. Step 2: Convert to fraction form
    163,460.32/225,573.70 = 90,861.32/x
  3. Step 3: Cross multiply
    163,460.32x = 225,573.70 × 90,861.32
  4. Step 4: Simplify right side
    163,460.32x = 20,495,924,139.28
  5. Step 5: Solve for x
    x = 20,495,924,139.28/163,460.32
  6. Step 6: Final answer
    x = 125,387.76

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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.