Home / 156,987.90-235,480.77-51,815.34

Finding the Fourth Proportional to 156,987.90, 235,480.77 and 51,815.34

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Solution

The fourth proportional to 156,987.90, 235,480.77 and 51,815.34 is: 77,722.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,987.90 : 235,480.77 = 51,815.34 : x
  2. Step 2: Convert to fraction form
    156,987.90/235,480.77 = 51,815.34/x
  3. Step 3: Cross multiply
    156,987.90x = 235,480.77 × 51,815.34
  4. Step 4: Simplify right side
    156,987.90x = 12,201,516,161.01
  5. Step 5: Solve for x
    x = 12,201,516,161.01/156,987.90
  6. Step 6: Final answer
    x = 77,722.65

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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.