Home / 103,839.40-155,931.90-57,125.80

Finding the Fourth Proportional to 103,839.40, 155,931.90 and 57,125.80

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Solution

The fourth proportional to 103,839.40, 155,931.90 and 57,125.80 is: 85,783.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,839.40 : 155,931.90 = 57,125.80 : x
  2. Step 2: Convert to fraction form
    103,839.40/155,931.90 = 57,125.80/x
  3. Step 3: Cross multiply
    103,839.40x = 155,931.90 × 57,125.80
  4. Step 4: Simplify right side
    103,839.40x = 8,907,734,533.02
  5. Step 5: Solve for x
    x = 8,907,734,533.02/103,839.40
  6. Step 6: Final answer
    x = 85,783.76

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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.