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Finding the Fourth Proportional to 104,686.96, 144,468.68 and 56,940.64

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Solution

The fourth proportional to 104,686.96, 144,468.68 and 56,940.64 is: 78,578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,686.96 : 144,468.68 = 56,940.64 : x
  2. Step 2: Convert to fraction form
    104,686.96/144,468.68 = 56,940.64/x
  3. Step 3: Cross multiply
    104,686.96x = 144,468.68 × 56,940.64
  4. Step 4: Simplify right side
    104,686.96x = 8,226,139,099.16
  5. Step 5: Solve for x
    x = 8,226,139,099.16/104,686.96
  6. Step 6: Final answer
    x = 78,578.45

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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.