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Finding the Fourth Proportional to 155,798.73, 215,179.59 and 104,722.79

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Solution

The fourth proportional to 155,798.73, 215,179.59 and 104,722.79 is: 144,636.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,798.73 : 215,179.59 = 104,722.79 : x
  2. Step 2: Convert to fraction form
    155,798.73/215,179.59 = 104,722.79/x
  3. Step 3: Cross multiply
    155,798.73x = 215,179.59 × 104,722.79
  4. Step 4: Simplify right side
    155,798.73x = 22,534,205,939.96
  5. Step 5: Solve for x
    x = 22,534,205,939.96/155,798.73
  6. Step 6: Final answer
    x = 144,636.65

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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.