Home / 82,459.08-123,858.99-78,865.38

Finding the Fourth Proportional to 82,459.08, 123,858.99 and 78,865.38

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Solution

The fourth proportional to 82,459.08, 123,858.99 and 78,865.38 is: 118,461.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,459.08 : 123,858.99 = 78,865.38 : x
  2. Step 2: Convert to fraction form
    82,459.08/123,858.99 = 78,865.38/x
  3. Step 3: Cross multiply
    82,459.08x = 123,858.99 × 78,865.38
  4. Step 4: Simplify right side
    82,459.08x = 9,768,186,312.77
  5. Step 5: Solve for x
    x = 9,768,186,312.77/82,459.08
  6. Step 6: Final answer
    x = 118,461.02

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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.