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Finding the Fourth Proportional to 105,097.80, 157,416.30 and 91,273.80

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Solution

The fourth proportional to 105,097.80, 157,416.30 and 91,273.80 is: 136,710.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,097.80 : 157,416.30 = 91,273.80 : x
  2. Step 2: Convert to fraction form
    105,097.80/157,416.30 = 91,273.80/x
  3. Step 3: Cross multiply
    105,097.80x = 157,416.30 × 91,273.80
  4. Step 4: Simplify right side
    105,097.80x = 14,367,983,882.94
  5. Step 5: Solve for x
    x = 14,367,983,882.94/105,097.80
  6. Step 6: Final answer
    x = 136,710.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.