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Finding the Fourth Proportional to 125,830, 173,646.62 and 69,242.59

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Solution

The fourth proportional to 125,830, 173,646.62 and 69,242.59 is: 95,555.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,830 : 173,646.62 = 69,242.59 : x
  2. Step 2: Convert to fraction form
    125,830/173,646.62 = 69,242.59/x
  3. Step 3: Cross multiply
    125,830x = 173,646.62 × 69,242.59
  4. Step 4: Simplify right side
    125,830x = 12,023,741,713.55
  5. Step 5: Solve for x
    x = 12,023,741,713.55/125,830
  6. Step 6: Final answer
    x = 95,555.45

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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.