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Finding the Fourth Proportional to 173,756.40, 260,780.40 and 85,085.70

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Solution

The fourth proportional to 173,756.40, 260,780.40 and 85,085.70 is: 127,699.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,756.40 : 260,780.40 = 85,085.70 : x
  2. Step 2: Convert to fraction form
    173,756.40/260,780.40 = 85,085.70/x
  3. Step 3: Cross multiply
    173,756.40x = 260,780.40 × 85,085.70
  4. Step 4: Simplify right side
    173,756.40x = 22,188,682,880.28
  5. Step 5: Solve for x
    x = 22,188,682,880.28/173,756.40
  6. Step 6: Final answer
    x = 127,699.95

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1.5x scale

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.