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Finding the Fourth Proportional to 125,994.83, 173,866.30 and 78,247.15

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Solution

The fourth proportional to 125,994.83, 173,866.30 and 78,247.15 is: 107,976.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,994.83 : 173,866.30 = 78,247.15 : x
  2. Step 2: Convert to fraction form
    125,994.83/173,866.30 = 78,247.15/x
  3. Step 3: Cross multiply
    125,994.83x = 173,866.30 × 78,247.15
  4. Step 4: Simplify right side
    125,994.83x = 13,604,541,825.76
  5. Step 5: Solve for x
    x = 13,604,541,825.76/125,994.83
  6. Step 6: Final answer
    x = 107,976.99

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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.