Home / 216,666.15-298,999.05-121,172.85

Finding the Fourth Proportional to 216,666.15, 298,999.05 and 121,172.85

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Solution

The fourth proportional to 216,666.15, 298,999.05 and 121,172.85 is: 167,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,666.15 : 298,999.05 = 121,172.85 : x
  2. Step 2: Convert to fraction form
    216,666.15/298,999.05 = 121,172.85/x
  3. Step 3: Cross multiply
    216,666.15x = 298,999.05 × 121,172.85
  4. Step 4: Simplify right side
    216,666.15x = 36,230,567,035.79
  5. Step 5: Solve for x
    x = 36,230,567,035.79/216,666.15
  6. Step 6: Final answer
    x = 167,218.40

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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.