Home / 216,558.72-298,853.16-121,070.64

Finding the Fourth Proportional to 216,558.72, 298,853.16 and 121,070.64

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Solution

The fourth proportional to 216,558.72, 298,853.16 and 121,070.64 is: 167,078.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,558.72 : 298,853.16 = 121,070.64 : x
  2. Step 2: Convert to fraction form
    216,558.72/298,853.16 = 121,070.64/x
  3. Step 3: Cross multiply
    216,558.72x = 298,853.16 × 121,070.64
  4. Step 4: Simplify right side
    216,558.72x = 36,182,343,347.22
  5. Step 5: Solve for x
    x = 36,182,343,347.22/216,558.72
  6. Step 6: Final answer
    x = 167,078.67

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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.