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Finding the Fourth Proportional to 104,392.64, 144,008.16 and 66,087.20

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Solution

The fourth proportional to 104,392.64, 144,008.16 and 66,087.20 is: 91,166.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,392.64 : 144,008.16 = 66,087.20 : x
  2. Step 2: Convert to fraction form
    104,392.64/144,008.16 = 66,087.20/x
  3. Step 3: Cross multiply
    104,392.64x = 144,008.16 × 66,087.20
  4. Step 4: Simplify right side
    104,392.64x = 9,517,096,071.55
  5. Step 5: Solve for x
    x = 9,517,096,071.55/104,392.64
  6. Step 6: Final answer
    x = 91,166.35

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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.