Home / 156,678.20-235,146.90-72,567.80

Finding the Fourth Proportional to 156,678.20, 235,146.90 and 72,567.80

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Solution

The fourth proportional to 156,678.20, 235,146.90 and 72,567.80 is: 108,911.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,678.20 : 235,146.90 = 72,567.80 : x
  2. Step 2: Convert to fraction form
    156,678.20/235,146.90 = 72,567.80/x
  3. Step 3: Cross multiply
    156,678.20x = 235,146.90 × 72,567.80
  4. Step 4: Simplify right side
    156,678.20x = 17,064,093,209.82
  5. Step 5: Solve for x
    x = 17,064,093,209.82/156,678.20
  6. Step 6: Final answer
    x = 108,911.73

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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.