Home / 131,765.20-197,647.80-72,570.40

Finding the Fourth Proportional to 131,765.20, 197,647.80 and 72,570.40

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Solution

The fourth proportional to 131,765.20, 197,647.80 and 72,570.40 is: 108,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,765.20 : 197,647.80 = 72,570.40 : x
  2. Step 2: Convert to fraction form
    131,765.20/197,647.80 = 72,570.40/x
  3. Step 3: Cross multiply
    131,765.20x = 197,647.80 × 72,570.40
  4. Step 4: Simplify right side
    131,765.20x = 14,343,379,905.12
  5. Step 5: Solve for x
    x = 14,343,379,905.12/131,765.20
  6. Step 6: Final answer
    x = 108,855.60

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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.