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Finding the Fourth Proportional to 156,719.40, 235,100.70 and 56,855.40

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Solution

The fourth proportional to 156,719.40, 235,100.70 and 56,855.40 is: 85,290.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,719.40 : 235,100.70 = 56,855.40 : x
  2. Step 2: Convert to fraction form
    156,719.40/235,100.70 = 56,855.40/x
  3. Step 3: Cross multiply
    156,719.40x = 235,100.70 × 56,855.40
  4. Step 4: Simplify right side
    156,719.40x = 13,366,744,338.78
  5. Step 5: Solve for x
    x = 13,366,744,338.78/156,719.40
  6. Step 6: Final answer
    x = 85,290.94

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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.