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Finding the Fourth Proportional to 127,688.70, 191,241.45 and 75,200.70

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Solution

The fourth proportional to 127,688.70, 191,241.45 and 75,200.70 is: 112,629.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,688.70 : 191,241.45 = 75,200.70 : x
  2. Step 2: Convert to fraction form
    127,688.70/191,241.45 = 75,200.70/x
  3. Step 3: Cross multiply
    127,688.70x = 191,241.45 × 75,200.70
  4. Step 4: Simplify right side
    127,688.70x = 14,381,490,909.02
  5. Step 5: Solve for x
    x = 14,381,490,909.02/127,688.70
  6. Step 6: Final answer
    x = 112,629.32

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1.5x scale

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.