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Finding the Fourth Proportional to 100,543.80, 150,815.70 and 65,114.40

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Solution

The fourth proportional to 100,543.80, 150,815.70 and 65,114.40 is: 97,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,543.80 : 150,815.70 = 65,114.40 : x
  2. Step 2: Convert to fraction form
    100,543.80/150,815.70 = 65,114.40/x
  3. Step 3: Cross multiply
    100,543.80x = 150,815.70 × 65,114.40
  4. Step 4: Simplify right side
    100,543.80x = 9,820,273,816.08
  5. Step 5: Solve for x
    x = 9,820,273,816.08/100,543.80
  6. Step 6: Final answer
    x = 97,671.60

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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.