Home / 120,429.76-166,194.40-66,715.52

Finding the Fourth Proportional to 120,429.76, 166,194.40 and 66,715.52

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Solution

The fourth proportional to 120,429.76, 166,194.40 and 66,715.52 is: 92,068.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,429.76 : 166,194.40 = 66,715.52 : x
  2. Step 2: Convert to fraction form
    120,429.76/166,194.40 = 66,715.52/x
  3. Step 3: Cross multiply
    120,429.76x = 166,194.40 × 66,715.52
  4. Step 4: Simplify right side
    120,429.76x = 11,087,745,817.09
  5. Step 5: Solve for x
    x = 11,087,745,817.09/120,429.76
  6. Step 6: Final answer
    x = 92,068.16

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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.