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Finding the Fourth Proportional to 105,598.90, 158,021.04 and 91,722.40

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Solution

The fourth proportional to 105,598.90, 158,021.04 and 91,722.40 is: 137,255.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,598.90 : 158,021.04 = 91,722.40 : x
  2. Step 2: Convert to fraction form
    105,598.90/158,021.04 = 91,722.40/x
  3. Step 3: Cross multiply
    105,598.90x = 158,021.04 × 91,722.40
  4. Step 4: Simplify right side
    105,598.90x = 14,494,069,039.30
  5. Step 5: Solve for x
    x = 14,494,069,039.30/105,598.90
  6. Step 6: Final answer
    x = 137,255.87

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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.