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Finding the Fourth Proportional to 104,425.64, 144,108.42 and 56,679.40

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Solution

The fourth proportional to 104,425.64, 144,108.42 and 56,679.40 is: 78,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,425.64 : 144,108.42 = 56,679.40 : x
  2. Step 2: Convert to fraction form
    104,425.64/144,108.42 = 56,679.40/x
  3. Step 3: Cross multiply
    104,425.64x = 144,108.42 × 56,679.40
  4. Step 4: Simplify right side
    104,425.64x = 8,167,978,780.55
  5. Step 5: Solve for x
    x = 8,167,978,780.55/104,425.64
  6. Step 6: Final answer
    x = 78,218.13

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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.