Home / 216,636.10-298,955.77-121,141.70

Finding the Fourth Proportional to 216,636.10, 298,955.77 and 121,141.70

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Solution

The fourth proportional to 216,636.10, 298,955.77 and 121,141.70 is: 167,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,636.10 : 298,955.77 = 121,141.70 : x
  2. Step 2: Convert to fraction form
    216,636.10/298,955.77 = 121,141.70/x
  3. Step 3: Cross multiply
    216,636.10x = 298,955.77 × 121,141.70
  4. Step 4: Simplify right side
    216,636.10x = 36,216,010,202.61
  5. Step 5: Solve for x
    x = 36,216,010,202.61/216,636.10
  6. Step 6: Final answer
    x = 167,174.40

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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.