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Finding the Fourth Proportional to 104,388.54, 144,056.16 and 56,641.89

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Solution

The fourth proportional to 104,388.54, 144,056.16 and 56,641.89 is: 78,165.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,388.54 : 144,056.16 = 56,641.89 : x
  2. Step 2: Convert to fraction form
    104,388.54/144,056.16 = 56,641.89/x
  3. Step 3: Cross multiply
    104,388.54x = 144,056.16 × 56,641.89
  4. Step 4: Simplify right side
    104,388.54x = 8,159,613,168.54
  5. Step 5: Solve for x
    x = 8,159,613,168.54/104,388.54
  6. Step 6: Final answer
    x = 78,165.79

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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.