Home / 103,520.02-155,280.03-82,645.78

Finding the Fourth Proportional to 103,520.02, 155,280.03 and 82,645.78

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Solution

The fourth proportional to 103,520.02, 155,280.03 and 82,645.78 is: 123,968.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,520.02 : 155,280.03 = 82,645.78 : x
  2. Step 2: Convert to fraction form
    103,520.02/155,280.03 = 82,645.78/x
  3. Step 3: Cross multiply
    103,520.02x = 155,280.03 × 82,645.78
  4. Step 4: Simplify right side
    103,520.02x = 12,833,239,197.77
  5. Step 5: Solve for x
    x = 12,833,239,197.77/103,520.02
  6. Step 6: Final answer
    x = 123,968.67

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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.