Home / 216,660.31-298,990.20-121,167.39

Finding the Fourth Proportional to 216,660.31, 298,990.20 and 121,167.39

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Solution

The fourth proportional to 216,660.31, 298,990.20 and 121,167.39 is: 167,210.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,660.31 : 298,990.20 = 121,167.39 : x
  2. Step 2: Convert to fraction form
    216,660.31/298,990.20 = 121,167.39/x
  3. Step 3: Cross multiply
    216,660.31x = 298,990.20 × 121,167.39
  4. Step 4: Simplify right side
    216,660.31x = 36,227,860,674.63
  5. Step 5: Solve for x
    x = 36,227,860,674.63/216,660.31
  6. Step 6: Final answer
    x = 167,210.42

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1.5x scale

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.