Home / 155,428.60-214,491.78-91,770.46

Finding the Fourth Proportional to 155,428.60, 214,491.78 and 91,770.46

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Solution

The fourth proportional to 155,428.60, 214,491.78 and 91,770.46 is: 126,643.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,428.60 : 214,491.78 = 91,770.46 : x
  2. Step 2: Convert to fraction form
    155,428.60/214,491.78 = 91,770.46/x
  3. Step 3: Cross multiply
    155,428.60x = 214,491.78 × 91,770.46
  4. Step 4: Simplify right side
    155,428.60x = 19,684,009,316.82
  5. Step 5: Solve for x
    x = 19,684,009,316.82/155,428.60
  6. Step 6: Final answer
    x = 126,643.42

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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.