Home / 156,911.90-235,367.85-51,717.20

Finding the Fourth Proportional to 156,911.90, 235,367.85 and 51,717.20

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Solution

The fourth proportional to 156,911.90, 235,367.85 and 51,717.20 is: 77,575.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,911.90 : 235,367.85 = 51,717.20 : x
  2. Step 2: Convert to fraction form
    156,911.90/235,367.85 = 51,717.20/x
  3. Step 3: Cross multiply
    156,911.90x = 235,367.85 × 51,717.20
  4. Step 4: Simplify right side
    156,911.90x = 12,172,566,172.02
  5. Step 5: Solve for x
    x = 12,172,566,172.02/156,911.90
  6. Step 6: Final answer
    x = 77,575.80

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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.