Home / 155,009.28-213,865.68-91,323.84

Finding the Fourth Proportional to 155,009.28, 213,865.68 and 91,323.84

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Solution

The fourth proportional to 155,009.28, 213,865.68 and 91,323.84 is: 125,999.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,009.28 : 213,865.68 = 91,323.84 : x
  2. Step 2: Convert to fraction form
    155,009.28/213,865.68 = 91,323.84/x
  3. Step 3: Cross multiply
    155,009.28x = 213,865.68 × 91,323.84
  4. Step 4: Simplify right side
    155,009.28x = 19,531,035,141.81
  5. Step 5: Solve for x
    x = 19,531,035,141.81/155,009.28
  6. Step 6: Final answer
    x = 125,999.13

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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.