Home / 120,547.20-166,347.96-66,828.72

Finding the Fourth Proportional to 120,547.20, 166,347.96 and 66,828.72

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Solution

The fourth proportional to 120,547.20, 166,347.96 and 66,828.72 is: 92,219.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,547.20 : 166,347.96 = 66,828.72 : x
  2. Step 2: Convert to fraction form
    120,547.20/166,347.96 = 66,828.72/x
  3. Step 3: Cross multiply
    120,547.20x = 166,347.96 × 66,828.72
  4. Step 4: Simplify right side
    120,547.20x = 11,116,821,241.41
  5. Step 5: Solve for x
    x = 11,116,821,241.41/120,547.20
  6. Step 6: Final answer
    x = 92,219.66

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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.