Home / 221,747.60-306,005.16-121,145.60

Finding the Fourth Proportional to 221,747.60, 306,005.16 and 121,145.60

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Solution

The fourth proportional to 221,747.60, 306,005.16 and 121,145.60 is: 167,177.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,747.60 : 306,005.16 = 121,145.60 : x
  2. Step 2: Convert to fraction form
    221,747.60/306,005.16 = 121,145.60/x
  3. Step 3: Cross multiply
    221,747.60x = 306,005.16 × 121,145.60
  4. Step 4: Simplify right side
    221,747.60x = 37,071,178,711.30
  5. Step 5: Solve for x
    x = 37,071,178,711.30/221,747.60
  6. Step 6: Final answer
    x = 167,177.36

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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.