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Finding the Fourth Proportional to 120,602.75, 166,430.88 and 66,156.17

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Solution

The fourth proportional to 120,602.75, 166,430.88 and 66,156.17 is: 91,295.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,602.75 : 166,430.88 = 66,156.17 : x
  2. Step 2: Convert to fraction form
    120,602.75/166,430.88 = 66,156.17/x
  3. Step 3: Cross multiply
    120,602.75x = 166,430.88 × 66,156.17
  4. Step 4: Simplify right side
    120,602.75x = 11,010,428,758.38
  5. Step 5: Solve for x
    x = 11,010,428,758.38/120,602.75
  6. Step 6: Final answer
    x = 91,295.01

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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.