Home / 79,612.02-109,152.58-78,190.46

Finding the Fourth Proportional to 79,612.02, 109,152.58 and 78,190.46

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Solution

The fourth proportional to 79,612.02, 109,152.58 and 78,190.46 is: 107,203.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,612.02 : 109,152.58 = 78,190.46 : x
  2. Step 2: Convert to fraction form
    79,612.02/109,152.58 = 78,190.46/x
  3. Step 3: Cross multiply
    79,612.02x = 109,152.58 × 78,190.46
  4. Step 4: Simplify right side
    79,612.02x = 8,534,690,440.39
  5. Step 5: Solve for x
    x = 8,534,690,440.39/79,612.02
  6. Step 6: Final answer
    x = 107,203.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.