Home / 103,837.40-155,928.90-57,123.80

Finding the Fourth Proportional to 103,837.40, 155,928.90 and 57,123.80

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Solution

The fourth proportional to 103,837.40, 155,928.90 and 57,123.80 is: 85,780.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,837.40 : 155,928.90 = 57,123.80 : x
  2. Step 2: Convert to fraction form
    103,837.40/155,928.90 = 57,123.80/x
  3. Step 3: Cross multiply
    103,837.40x = 155,928.90 × 57,123.80
  4. Step 4: Simplify right side
    103,837.40x = 8,907,251,297.82
  5. Step 5: Solve for x
    x = 8,907,251,297.82/103,837.40
  6. Step 6: Final answer
    x = 85,780.76

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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.