Home / 155,880.28-215,113.62-121,923.46

Finding the Fourth Proportional to 155,880.28, 215,113.62 and 121,923.46

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Solution

The fourth proportional to 155,880.28, 215,113.62 and 121,923.46 is: 168,253.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,880.28 : 215,113.62 = 121,923.46 : x
  2. Step 2: Convert to fraction form
    155,880.28/215,113.62 = 121,923.46/x
  3. Step 3: Cross multiply
    155,880.28x = 215,113.62 × 121,923.46
  4. Step 4: Simplify right side
    155,880.28x = 26,227,396,843.53
  5. Step 5: Solve for x
    x = 26,227,396,843.53/155,880.28
  6. Step 6: Final answer
    x = 168,253.46

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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.