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Finding the Fourth Proportional to 119,859.70, 165,407.09 and 66,146.10

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Solution

The fourth proportional to 119,859.70, 165,407.09 and 66,146.10 is: 91,282.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,859.70 : 165,407.09 = 66,146.10 : x
  2. Step 2: Convert to fraction form
    119,859.70/165,407.09 = 66,146.10/x
  3. Step 3: Cross multiply
    119,859.70x = 165,407.09 × 66,146.10
  4. Step 4: Simplify right side
    119,859.70x = 10,941,033,915.85
  5. Step 5: Solve for x
    x = 10,941,033,915.85/119,859.70
  6. Step 6: Final answer
    x = 91,282.01

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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.