Home / 113,826.80-170,740.20-72,457.20

Finding the Fourth Proportional to 113,826.80, 170,740.20 and 72,457.20

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Solution

The fourth proportional to 113,826.80, 170,740.20 and 72,457.20 is: 108,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,826.80 : 170,740.20 = 72,457.20 : x
  2. Step 2: Convert to fraction form
    113,826.80/170,740.20 = 72,457.20/x
  3. Step 3: Cross multiply
    113,826.80x = 170,740.20 × 72,457.20
  4. Step 4: Simplify right side
    113,826.80x = 12,371,356,819.44
  5. Step 5: Solve for x
    x = 12,371,356,819.44/113,826.80
  6. Step 6: Final answer
    x = 108,685.80

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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.