Home / 156,470.40-234,267.12-81,426.96

Finding the Fourth Proportional to 156,470.40, 234,267.12 and 81,426.96

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Solution

The fourth proportional to 156,470.40, 234,267.12 and 81,426.96 is: 121,912.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,470.40 : 234,267.12 = 81,426.96 : x
  2. Step 2: Convert to fraction form
    156,470.40/234,267.12 = 81,426.96/x
  3. Step 3: Cross multiply
    156,470.40x = 234,267.12 × 81,426.96
  4. Step 4: Simplify right side
    156,470.40x = 19,075,659,409.56
  5. Step 5: Solve for x
    x = 19,075,659,409.56/156,470.40
  6. Step 6: Final answer
    x = 121,912.26

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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.