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Finding the Fourth Proportional to 123,387.10, 173,135.60 and 123,387.10

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Solution

The fourth proportional to 123,387.10, 173,135.60 and 123,387.10 is: 173,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,387.10 : 173,135.60 = 123,387.10 : x
  2. Step 2: Convert to fraction form
    123,387.10/173,135.60 = 123,387.10/x
  3. Step 3: Cross multiply
    123,387.10x = 173,135.60 × 123,387.10
  4. Step 4: Simplify right side
    123,387.10x = 21,362,699,590.76
  5. Step 5: Solve for x
    x = 21,362,699,590.76/123,387.10
  6. Step 6: Final answer
    x = 173,135.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.