Home / 142,688.80-214,035.29-67,816.58

Finding the Fourth Proportional to 142,688.80, 214,035.29 and 67,816.58

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Solution

The fourth proportional to 142,688.80, 214,035.29 and 67,816.58 is: 101,725.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,688.80 : 214,035.29 = 67,816.58 : x
  2. Step 2: Convert to fraction form
    142,688.80/214,035.29 = 67,816.58/x
  3. Step 3: Cross multiply
    142,688.80x = 214,035.29 × 67,816.58
  4. Step 4: Simplify right side
    142,688.80x = 14,515,141,028.03
  5. Step 5: Solve for x
    x = 14,515,141,028.03/142,688.80
  6. Step 6: Final answer
    x = 101,725.86

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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.