Home / 156,839.16-235,126.50-68,025.80

Finding the Fourth Proportional to 156,839.16, 235,126.50 and 68,025.80

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Solution

The fourth proportional to 156,839.16, 235,126.50 and 68,025.80 is: 101,981.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,839.16 : 235,126.50 = 68,025.80 : x
  2. Step 2: Convert to fraction form
    156,839.16/235,126.50 = 68,025.80/x
  3. Step 3: Cross multiply
    156,839.16x = 235,126.50 × 68,025.80
  4. Step 4: Simplify right side
    156,839.16x = 15,994,668,263.70
  5. Step 5: Solve for x
    x = 15,994,668,263.70/156,839.16
  6. Step 6: Final answer
    x = 101,981.34

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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.