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Finding the Fourth Proportional to 104,640.60, 144,400.08 and 56,892.30

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Solution

The fourth proportional to 104,640.60, 144,400.08 and 56,892.30 is: 78,509.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,640.60 : 144,400.08 = 56,892.30 : x
  2. Step 2: Convert to fraction form
    104,640.60/144,400.08 = 56,892.30/x
  3. Step 3: Cross multiply
    104,640.60x = 144,400.08 × 56,892.30
  4. Step 4: Simplify right side
    104,640.60x = 8,215,252,671.38
  5. Step 5: Solve for x
    x = 8,215,252,671.38/104,640.60
  6. Step 6: Final answer
    x = 78,509.23

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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.