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Finding the Fourth Proportional to 105,814.80, 158,722.20 and 98,816.40

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Solution

The fourth proportional to 105,814.80, 158,722.20 and 98,816.40 is: 148,224.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,814.80 : 158,722.20 = 98,816.40 : x
  2. Step 2: Convert to fraction form
    105,814.80/158,722.20 = 98,816.40/x
  3. Step 3: Cross multiply
    105,814.80x = 158,722.20 × 98,816.40
  4. Step 4: Simplify right side
    105,814.80x = 15,684,356,404.08
  5. Step 5: Solve for x
    x = 15,684,356,404.08/105,814.80
  6. Step 6: Final answer
    x = 148,224.60

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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.