Home / 124,830.40-187,245.60-72,212.80

Finding the Fourth Proportional to 124,830.40, 187,245.60 and 72,212.80

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Solution

The fourth proportional to 124,830.40, 187,245.60 and 72,212.80 is: 108,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,830.40 : 187,245.60 = 72,212.80 : x
  2. Step 2: Convert to fraction form
    124,830.40/187,245.60 = 72,212.80/x
  3. Step 3: Cross multiply
    124,830.40x = 187,245.60 × 72,212.80
  4. Step 4: Simplify right side
    124,830.40x = 13,521,529,063.68
  5. Step 5: Solve for x
    x = 13,521,529,063.68/124,830.40
  6. Step 6: Final answer
    x = 108,319.20

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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.