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Finding the Fourth Proportional to 127,190.88, 175,487.85 and 79,492.68

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Solution

The fourth proportional to 127,190.88, 175,487.85 and 79,492.68 is: 109,677.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,190.88 : 175,487.85 = 79,492.68 : x
  2. Step 2: Convert to fraction form
    127,190.88/175,487.85 = 79,492.68/x
  3. Step 3: Cross multiply
    127,190.88x = 175,487.85 × 79,492.68
  4. Step 4: Simplify right side
    127,190.88x = 13,949,999,503.94
  5. Step 5: Solve for x
    x = 13,949,999,503.94/127,190.88
  6. Step 6: Final answer
    x = 109,677.67

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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.