Home / 216,655.16-298,999.35-121,170.74

Finding the Fourth Proportional to 216,655.16, 298,999.35 and 121,170.74

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Solution

The fourth proportional to 216,655.16, 298,999.35 and 121,170.74 is: 167,224.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,655.16 : 298,999.35 = 121,170.74 : x
  2. Step 2: Convert to fraction form
    216,655.16/298,999.35 = 121,170.74/x
  3. Step 3: Cross multiply
    216,655.16x = 298,999.35 × 121,170.74
  4. Step 4: Simplify right side
    216,655.16x = 36,229,971,004.02
  5. Step 5: Solve for x
    x = 36,229,971,004.02/216,655.16
  6. Step 6: Final answer
    x = 167,224.14

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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.