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Finding the Fourth Proportional to 98,704.80, 148,172.40 and 56,618.40

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Solution

The fourth proportional to 98,704.80, 148,172.40 and 56,618.40 is: 84,993.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,704.80 : 148,172.40 = 56,618.40 : x
  2. Step 2: Convert to fraction form
    98,704.80/148,172.40 = 56,618.40/x
  3. Step 3: Cross multiply
    98,704.80x = 148,172.40 × 56,618.40
  4. Step 4: Simplify right side
    98,704.80x = 8,389,284,212.16
  5. Step 5: Solve for x
    x = 8,389,284,212.16/98,704.80
  6. Step 6: Final answer
    x = 84,993.68

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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.