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Finding the Fourth Proportional to 145,855.80, 218,783.70 and 98,616.60

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Solution

The fourth proportional to 145,855.80, 218,783.70 and 98,616.60 is: 147,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,855.80 : 218,783.70 = 98,616.60 : x
  2. Step 2: Convert to fraction form
    145,855.80/218,783.70 = 98,616.60/x
  3. Step 3: Cross multiply
    145,855.80x = 218,783.70 × 98,616.60
  4. Step 4: Simplify right side
    145,855.80x = 21,575,704,629.42
  5. Step 5: Solve for x
    x = 21,575,704,629.42/145,855.80
  6. Step 6: Final answer
    x = 147,924.90

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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.