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Finding the Fourth Proportional to 156,935.60, 235,014.60 and 100,689.20

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Solution

The fourth proportional to 156,935.60, 235,014.60 and 100,689.20 is: 150,784.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,935.60 : 235,014.60 = 100,689.20 : x
  2. Step 2: Convert to fraction form
    156,935.60/235,014.60 = 100,689.20/x
  3. Step 3: Cross multiply
    156,935.60x = 235,014.60 × 100,689.20
  4. Step 4: Simplify right side
    156,935.60x = 23,663,432,062.32
  5. Step 5: Solve for x
    x = 23,663,432,062.32/156,935.60
  6. Step 6: Final answer
    x = 150,784.35

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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.