Home / 135,688.64-203,276.05-90,573.96

Finding the Fourth Proportional to 135,688.64, 203,276.05 and 90,573.96

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Solution

The fourth proportional to 135,688.64, 203,276.05 and 90,573.96 is: 135,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,688.64 : 203,276.05 = 90,573.96 : x
  2. Step 2: Convert to fraction form
    135,688.64/203,276.05 = 90,573.96/x
  3. Step 3: Cross multiply
    135,688.64x = 203,276.05 × 90,573.96
  4. Step 4: Simplify right side
    135,688.64x = 18,411,516,934.88
  5. Step 5: Solve for x
    x = 18,411,516,934.88/135,688.64
  6. Step 6: Final answer
    x = 135,689.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.