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Finding the Fourth Proportional to 156,842.87, 216,444.44 and 85,222.89

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Solution

The fourth proportional to 156,842.87, 216,444.44 and 85,222.89 is: 117,608.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,842.87 : 216,444.44 = 85,222.89 : x
  2. Step 2: Convert to fraction form
    156,842.87/216,444.44 = 85,222.89/x
  3. Step 3: Cross multiply
    156,842.87x = 216,444.44 × 85,222.89
  4. Step 4: Simplify right side
    156,842.87x = 18,446,020,914.29
  5. Step 5: Solve for x
    x = 18,446,020,914.29/156,842.87
  6. Step 6: Final answer
    x = 117,608.29

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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.