Home / 78,846.30-118,269.45-72,395.10

Finding the Fourth Proportional to 78,846.30, 118,269.45 and 72,395.10

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Solution

The fourth proportional to 78,846.30, 118,269.45 and 72,395.10 is: 108,592.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,846.30 : 118,269.45 = 72,395.10 : x
  2. Step 2: Convert to fraction form
    78,846.30/118,269.45 = 72,395.10/x
  3. Step 3: Cross multiply
    78,846.30x = 118,269.45 × 72,395.10
  4. Step 4: Simplify right side
    78,846.30x = 8,562,128,659.70
  5. Step 5: Solve for x
    x = 8,562,128,659.70/78,846.30
  6. Step 6: Final answer
    x = 108,592.65

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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.