Home / 125,838.55-173,664.69-72,127.05

Finding the Fourth Proportional to 125,838.55, 173,664.69 and 72,127.05

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Solution

The fourth proportional to 125,838.55, 173,664.69 and 72,127.05 is: 99,539.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,838.55 : 173,664.69 = 72,127.05 : x
  2. Step 2: Convert to fraction form
    125,838.55/173,664.69 = 72,127.05/x
  3. Step 3: Cross multiply
    125,838.55x = 173,664.69 × 72,127.05
  4. Step 4: Simplify right side
    125,838.55x = 12,525,921,778.86
  5. Step 5: Solve for x
    x = 12,525,921,778.86/125,838.55
  6. Step 6: Final answer
    x = 99,539.62

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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.