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Finding the Fourth Proportional to 123,492.14, 170,425.80 and 69,779.42

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Solution

The fourth proportional to 123,492.14, 170,425.80 and 69,779.42 is: 96,299.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,492.14 : 170,425.80 = 69,779.42 : x
  2. Step 2: Convert to fraction form
    123,492.14/170,425.80 = 69,779.42/x
  3. Step 3: Cross multiply
    123,492.14x = 170,425.80 × 69,779.42
  4. Step 4: Simplify right side
    123,492.14x = 11,892,213,477.04
  5. Step 5: Solve for x
    x = 11,892,213,477.04/123,492.14
  6. Step 6: Final answer
    x = 96,299.36

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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.