Home / 113,609.40-170,219.70-72,007.80

Finding the Fourth Proportional to 113,609.40, 170,219.70 and 72,007.80

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Solution

The fourth proportional to 113,609.40, 170,219.70 and 72,007.80 is: 107,888.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,609.40 : 170,219.70 = 72,007.80 : x
  2. Step 2: Convert to fraction form
    113,609.40/170,219.70 = 72,007.80/x
  3. Step 3: Cross multiply
    113,609.40x = 170,219.70 × 72,007.80
  4. Step 4: Simplify right side
    113,609.40x = 12,257,146,113.66
  5. Step 5: Solve for x
    x = 12,257,146,113.66/113,609.40
  6. Step 6: Final answer
    x = 107,888.49

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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.