Home / 218,676.12-301,776.06-121,877.28

Finding the Fourth Proportional to 218,676.12, 301,776.06 and 121,877.28

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Solution

The fourth proportional to 218,676.12, 301,776.06 and 121,877.28 is: 168,192.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,676.12 : 301,776.06 = 121,877.28 : x
  2. Step 2: Convert to fraction form
    218,676.12/301,776.06 = 121,877.28/x
  3. Step 3: Cross multiply
    218,676.12x = 301,776.06 × 121,877.28
  4. Step 4: Simplify right side
    218,676.12x = 36,779,644,500.94
  5. Step 5: Solve for x
    x = 36,779,644,500.94/218,676.12
  6. Step 6: Final answer
    x = 168,192.32

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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.