Home / 78,846.20-118,116.10-70,010.72

Finding the Fourth Proportional to 78,846.20, 118,116.10 and 70,010.72

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Solution

The fourth proportional to 78,846.20, 118,116.10 and 70,010.72 is: 104,880.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,846.20 : 118,116.10 = 70,010.72 : x
  2. Step 2: Convert to fraction form
    78,846.20/118,116.10 = 70,010.72/x
  3. Step 3: Cross multiply
    78,846.20x = 118,116.10 × 70,010.72
  4. Step 4: Simplify right side
    78,846.20x = 8,269,393,204.59
  5. Step 5: Solve for x
    x = 8,269,393,204.59/78,846.20
  6. Step 6: Final answer
    x = 104,880.05

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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.