Home / 120,220.02-165,904.65-66,506.76

Finding the Fourth Proportional to 120,220.02, 165,904.65 and 66,506.76

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Solution

The fourth proportional to 120,220.02, 165,904.65 and 66,506.76 is: 91,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,220.02 : 165,904.65 = 66,506.76 : x
  2. Step 2: Convert to fraction form
    120,220.02/165,904.65 = 66,506.76/x
  3. Step 3: Cross multiply
    120,220.02x = 165,904.65 × 66,506.76
  4. Step 4: Simplify right side
    120,220.02x = 11,033,780,740.43
  5. Step 5: Solve for x
    x = 11,033,780,740.43/120,220.02
  6. Step 6: Final answer
    x = 91,779.89

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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.