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Finding the Fourth Proportional to 124,468.26, 171,779.16 and 76,720.38

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Solution

The fourth proportional to 124,468.26, 171,779.16 and 76,720.38 is: 105,882.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,468.26 : 171,779.16 = 76,720.38 : x
  2. Step 2: Convert to fraction form
    124,468.26/171,779.16 = 76,720.38/x
  3. Step 3: Cross multiply
    124,468.26x = 171,779.16 × 76,720.38
  4. Step 4: Simplify right side
    124,468.26x = 13,178,962,431.28
  5. Step 5: Solve for x
    x = 13,178,962,431.28/124,468.26
  6. Step 6: Final answer
    x = 105,882.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.