Home / 82,261.04-123,390.36-19,931.12

Finding the Fourth Proportional to 82,261.04, 123,390.36 and 19,931.12

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Solution

The fourth proportional to 82,261.04, 123,390.36 and 19,931.12 is: 29,896.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,261.04 : 123,390.36 = 19,931.12 : x
  2. Step 2: Convert to fraction form
    82,261.04/123,390.36 = 19,931.12/x
  3. Step 3: Cross multiply
    82,261.04x = 123,390.36 × 19,931.12
  4. Step 4: Simplify right side
    82,261.04x = 2,459,308,072.00
  5. Step 5: Solve for x
    x = 2,459,308,072.00/82,261.04
  6. Step 6: Final answer
    x = 29,896.39

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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.