Home / 156,929.48-216,563.70-85,310.12

Finding the Fourth Proportional to 156,929.48, 216,563.70 and 85,310.12

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Solution

The fourth proportional to 156,929.48, 216,563.70 and 85,310.12 is: 117,728.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,929.48 : 216,563.70 = 85,310.12 : x
  2. Step 2: Convert to fraction form
    156,929.48/216,563.70 = 85,310.12/x
  3. Step 3: Cross multiply
    156,929.48x = 216,563.70 × 85,310.12
  4. Step 4: Simplify right side
    156,929.48x = 18,475,075,234.64
  5. Step 5: Solve for x
    x = 18,475,075,234.64/156,929.48
  6. Step 6: Final answer
    x = 117,728.52

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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.