Home / 119,186.20-178,520.10-72,357.40

Finding the Fourth Proportional to 119,186.20, 178,520.10 and 72,357.40

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Solution

The fourth proportional to 119,186.20, 178,520.10 and 72,357.40 is: 108,378.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,186.20 : 178,520.10 = 72,357.40 : x
  2. Step 2: Convert to fraction form
    119,186.20/178,520.10 = 72,357.40/x
  3. Step 3: Cross multiply
    119,186.20x = 178,520.10 × 72,357.40
  4. Step 4: Simplify right side
    119,186.20x = 12,917,250,283.74
  5. Step 5: Solve for x
    x = 12,917,250,283.74/119,186.20
  6. Step 6: Final answer
    x = 108,378.74

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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.