Home / 82,090.45-123,142.65-25,915.53

Finding the Fourth Proportional to 82,090.45, 123,142.65 and 25,915.53

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Solution

The fourth proportional to 82,090.45, 123,142.65 and 25,915.53 is: 38,875.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,090.45 : 123,142.65 = 25,915.53 : x
  2. Step 2: Convert to fraction form
    82,090.45/123,142.65 = 25,915.53/x
  3. Step 3: Cross multiply
    82,090.45x = 123,142.65 × 25,915.53
  4. Step 4: Simplify right side
    82,090.45x = 3,191,307,040.35
  5. Step 5: Solve for x
    x = 3,191,307,040.35/82,090.45
  6. Step 6: Final answer
    x = 38,875.50

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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.