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Finding the Fourth Proportional to 156,274.66, 215,615.28 and 98,137.66

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Solution

The fourth proportional to 156,274.66, 215,615.28 and 98,137.66 is: 135,402.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,274.66 : 215,615.28 = 98,137.66 : x
  2. Step 2: Convert to fraction form
    156,274.66/215,615.28 = 98,137.66/x
  3. Step 3: Cross multiply
    156,274.66x = 215,615.28 × 98,137.66
  4. Step 4: Simplify right side
    156,274.66x = 21,159,979,039.44
  5. Step 5: Solve for x
    x = 21,159,979,039.44/156,274.66
  6. Step 6: Final answer
    x = 135,402.50

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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.