Home / 77,104.08-115,336.27-72,380.16

Finding the Fourth Proportional to 77,104.08, 115,336.27 and 72,380.16

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Solution

The fourth proportional to 77,104.08, 115,336.27 and 72,380.16 is: 108,269.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,104.08 : 115,336.27 = 72,380.16 : x
  2. Step 2: Convert to fraction form
    77,104.08/115,336.27 = 72,380.16/x
  3. Step 3: Cross multiply
    77,104.08x = 115,336.27 × 72,380.16
  4. Step 4: Simplify right side
    77,104.08x = 8,348,056,737.82
  5. Step 5: Solve for x
    x = 8,348,056,737.82/77,104.08
  6. Step 6: Final answer
    x = 108,269.98

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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.