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Finding the Fourth Proportional to 156,878.80, 235,267.64 and 51,672.72

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Solution

The fourth proportional to 156,878.80, 235,267.64 and 51,672.72 is: 77,492.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,878.80 : 235,267.64 = 51,672.72 : x
  2. Step 2: Convert to fraction form
    156,878.80/235,267.64 = 51,672.72/x
  3. Step 3: Cross multiply
    156,878.80x = 235,267.64 × 51,672.72
  4. Step 4: Simplify right side
    156,878.80x = 12,156,918,886.78
  5. Step 5: Solve for x
    x = 12,156,918,886.78/156,878.80
  6. Step 6: Final answer
    x = 77,492.43

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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.