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Finding the Fourth Proportional to 125,663, 173,415.30 and 71,948.84

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Solution

The fourth proportional to 125,663, 173,415.30 and 71,948.84 is: 99,289.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,663 : 173,415.30 = 71,948.84 : x
  2. Step 2: Convert to fraction form
    125,663/173,415.30 = 71,948.84/x
  3. Step 3: Cross multiply
    125,663x = 173,415.30 × 71,948.84
  4. Step 4: Simplify right side
    125,663x = 12,477,029,673.25
  5. Step 5: Solve for x
    x = 12,477,029,673.25/125,663
  6. Step 6: Final answer
    x = 99,289.61

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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.