Home / 81,127.36-121,492.32-67,000.96

Finding the Fourth Proportional to 81,127.36, 121,492.32 and 67,000.96

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Solution

The fourth proportional to 81,127.36, 121,492.32 and 67,000.96 is: 100,337.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,127.36 : 121,492.32 = 67,000.96 : x
  2. Step 2: Convert to fraction form
    81,127.36/121,492.32 = 67,000.96/x
  3. Step 3: Cross multiply
    81,127.36x = 121,492.32 × 67,000.96
  4. Step 4: Simplify right side
    81,127.36x = 8,140,102,072.63
  5. Step 5: Solve for x
    x = 8,140,102,072.63/81,127.36
  6. Step 6: Final answer
    x = 100,337.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.